October 2010 LSAT Section 3 Question 8

Marcia: Not all vegetarian diets lead to nutritional deficiencies. Research shows that vegetarians can obtain a full...

carolinesavoy on August 13, 2015

Confusion

This was a question that more than one answer seemed correct to me... Would you mind explaining why the correct answer is the best choice?

Replies

Create a free account to read and take part in forum discussions.

Already have an account? log in

Naz on August 25, 2015

Marcia tries to make the point that not all vegetarian diets will lead to nutritional deficiencies, i.e. some vegetarian diets will not lead to nutritional deficiencies. She cites research as evidence for this claim.

Theodora responds by stating that Marcia is wrong in claiming that vegetarianism cannot lead to nutritional deficiencies and continues to show why Marcia is wrong on this front.

We can stop right here. What's the issue?

Marcia did not make the claim that vegetarianism cannot lead to nutritional deficiencies. Marcia states that some vegetarian diets will not lead to nutritional deficiencies. These are two very different claims.

This is exactly what answer choice (A) points out.

Hope that clears things up! Please let us know if you have any other questions.

Julie-V on August 24, 2019

so is the biggest takeaway for this question the distinction between "not all" and "all"?