Why should you ask follow-up questions during a peer review? so that the reviewer knows you paid attention to make sure you get all the feedback you need for your revision so that reviewers can give all of their opinions about your work to prove that the reviewer actually read your work

To help make sure you get all the feedback you need.

Explanation:

This is one of the reasons why you might benefit from asking questions to a peer reviewer. After a review, the reviewer most likely has a lot of information to offer you. By asking questions, you direct him towards the subjects that interest you more. In this way, you are more likely to get all the feedback that you need in order to improve your work.

the answer is the last one

the answer is a)   a sentence of death costs the state "almost three times as much as a sentence of life in prison" (delon 147)