Rhetorical Synthesis Pattern - Compare Contrast

Highlighting a similarity or difference between two subjects using given notes

Rhetorical Synthesis questions hand you a set of bullet-point notes a student has gathered during research. Your job is to pick the answer choice that best accomplishes a specific writing goal. In Compare and Contrast questions, that goal is always some version of "emphasize a similarity" or "emphasize a difference" between two subjects mentioned in the notes. You're not writing anything yourself — you're evaluating four ready-made sentences and deciding which one actually does what the question asks.

How to recognize it

The question will always begin with a block of notes (usually four to six bullet points) about two subjects. The stem will say something like "The student wants to emphasize a similarity between X and Y" or "The student wants to contrast X and Y." The word similarity, difference, or contrast is your signal that you're in Compare and Contrast territory.

How to approach it

Start by reading the notes carefully. Identify the two subjects and figure out what they share and where they differ — the notes give you everything you need. Then read the stem closely: does it ask for a similarity or a difference? This distinction matters enormously, because one of the most common wrong answers does the opposite task.

Here's an example. The notes read:

While researching a topic, a student has taken the following notes:

• In 1848, the Seneca Falls Convention in New York issued the Declaration of Sentiments calling for women's rights, including suffrage.
• The convention's organizers argued for legal and social equality for women.
• Founded in 1966, the National Organization for Women (NOW) advocated for equal employment opportunities and legal reforms.
• NOW used lobbying and litigation to push for gender equality.

The question asks: The student wants to emphasize a similarity between the Seneca Falls Convention and the National Organization for Women (NOW). Which choice most effectively uses relevant information from the notes to accomplish this goal?

A) Both the Seneca Falls Convention and NOW advocated for expanded legal and social rights for women. B) In 1848, the Seneca Falls Convention issued the Declaration of Sentiments. C) NOW, founded in 1966, pressed for equal employment opportunities and legal reforms. D) Whereas Seneca Falls was a single convention, NOW developed into a long-running membership organization.

The stem asks for a similarity. Scan the notes: both Seneca Falls and NOW pushed for legal and social rights for women. Choice A captures exactly that shared purpose. Choice B only talks about the convention — it ignores NOW entirely. Choice C only talks about NOW — it ignores the convention. Choice D actually highlights a difference (one was a single event, the other an ongoing organization), which is the opposite of what the question asks. The answer is A.

The pattern behind the wrong answers here shows up constantly in Compare and Contrast questions: one choice covers only the first subject, another covers only the second, and a third does the opposite task (contrasting when the question asks for similarity, or vice versa).

Traps to watch for

• Opposite task. If the question asks for a similarity, one answer will emphasize a difference (and vice versa). Words like "whereas," "unlike," or "on the other hand" in an answer choice are red flags when the question asks for a similarity. Words like "both" or "similarly" are red flags when the question asks for a difference.
• Only one subject. Two of the four choices will typically mention just one of the two subjects. They might be factually accurate, but they can't accomplish a comparison or contrast on their own.
• Swapped details. On harder questions, a wrong answer may assign the wrong details to each subject — for instance, saying Subject A does what Subject B actually does. If you haven't read the notes carefully, this one catches you.

How the difficulty changes

Easier questions:

While researching a topic, a student has taken the following notes:

• Europa is a moon of Jupiter.
• Observations suggest Europa has a subsurface ocean beneath its icy crust.
• NASA's Galileo spacecraft studied Europa through repeated flybys.
• Enceladus is a moon of Saturn.
• Enceladus has plumes of water ice and vapor erupting from its south pole.
• NASA's Cassini spacecraft sampled material from Enceladus's plumes.

The question asks the student to emphasize a similarity between the two moons. The notes make the overlap obvious — both have subsurface oceans beneath icy surfaces. At this level, the shared feature practically jumps off the page, and the wrong answers are easy to eliminate because they either mention only one moon or point out a difference (like which planet each orbits).

Medium questions:

While researching a topic, a student has taken the following notes:

• Some animals enter a temporary state of reduced metabolic activity.
• This is known as dormancy.
• Desert snails seal themselves in their shells during extreme heat and drought (aestivation).
• This helps desert snails survive hot, dry periods.
• Ground squirrels lower their body temperature and activity in winter (hibernation).
• This helps ground squirrels conserve energy when food is scarce and temperatures are low.

Now the question asks for a difference in how desert snails and ground squirrels use dormancy. Both animals use dormancy, but for opposite reasons — snails escape heat, squirrels escape cold. The trap here is vicious: one wrong answer swaps the details, claiming snails hibernate for cold and squirrels aestivate for heat. If you read the notes loosely, that swap might slip past you. At medium difficulty, you have to match each detail to the correct subject.

Harder questions:

While researching a topic, a student has taken the following notes:

• Conferences often use badge colors to indicate a participant's role.
• Roles include attendee, speaker, and workshop leader.
• At the Global Learning Summit, green badges identify both speakers and workshop leaders.
• At the Innovation Expo, speakers generally wear gold badges.
• At the Innovation Expo, green badges are generally reserved for workshop leaders; attendees wear blue.

The question asks the student to contrast how green badges are used at two conferences. The notes are dense with overlapping color-role assignments, and the correct answer hinges on a subtle scope difference: green means "speakers and workshop leaders" at one event but only "workshop leaders" at the other. One wrong answer focuses on a similarity (both use green for workshop leaders) — true, but not a contrast. Another brings in gold badges, which is accurate but doesn't answer the question about green badges. At this level, the details are close enough that you have to track each piece precisely.

Your approach on test day

1. Read the notes and identify the two subjects before you look at the answer choices.
2. Check the stem: does it ask for a similarity or a difference? Underline that word.
3. Eliminate any choice that mentions only one subject — it can't compare or contrast by itself.
4. Among the remaining choices, confirm that the one you pick does the right task (similarity vs. difference) and assigns the right details to the right subjects.