A free, expert breakdown of this official LSAT Logical Reasoning question.
Save & drill this skill — build targeted practice sets from questions like this one
Video walkthroughs — watch every question solved step by step
81 official LSATs — as questions, timed sections & full-length tests
Describe the reasoning error the argument actually commits.
Answers that name a real logical flaw the argument doesn't actually make.
Articulate the gap in the reasoning yourself, then match it to the choice that describes that gap.
The student has most likely misinterpreted the professor’s remark to imply that
Only people with type O
Why this is right
Answer A is correct.
Skill tested: Flaw · how this choice captures the argument's function is the move to repeat next time.
81% picked this
People with type O blood
9% picked this
People with type B blood
3% picked this
What is true of one
1% picked this
If both parents have type
5% picked this
Continue the review in LSAT Lab
Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.
Turn this review into a targeted study plan.
Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.