Most of the students who took Spanish

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMust be True

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Stimulus

Most of the students who took Spanish 101 at the university last semester attended every class session. However, each student who received a grade lower least one class session.

What this question is testing

Must be True

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question

21.

Which one of the following statements about the students who took Spanish 101 at the university last semester can be properly inferred

Answer choices

Illegal Reversal17% picked this
At least some of the students who received a grade of A minus or higher
We know that Attended every class → B- or higher But this answer is trying to go backwards, acting like if you got an A- or higher then you must have attended every class. It's possible that all the people who attended every class just got B's.
17%
Illegal Reversal17% picked this
Most, if not all, of the students who missed at least one class session received a grade
We know that received lower than B- → missed at least 1 This answer is acting like we know that if you missed at least 1, then you got lower than a B minus. We can't make any generalization about Most students who missed at least 1.
17%
Too Strong: higher than B-27% picked this
Most of the students received a grade higher than
What we were able to infer is that they got a grade of B minus or higher. This is saying they were all above B minus. Since Most attended every class, Most didn't get lower than B minus. But it's possible they all got a B minus.
27%
Out of Scope: B- or higher11% picked this
At least one student who received a grade of B minus or higher missed one
We were only told that students who got lower than B minus missed at least one class. We don't know if some students who got B-minus or higher missed at least one class.
11%
Correct28% picked this
More than half of the students received a grade of B
Why this is right
This is what we prephrased -- most of the students got a B minus or higher. Most = more than half
Skill tested: Must be True · how this choice captures the argument's function is the move to repeat next time.
28%

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