Apeer reviewer should do all of the following except
a. notify you about grammatical errors.
b. ask you to clarify what you've written.
c. identify problems with logical sequencing.
d. rewrite poorly presented supporting details.

I think the answer is D. rewrite poorly presented supporting details because a peer reviewer's job is to identify any errors in your writing before it's submitted. A peer reviewer cannot rewrite or fix your errors, they must notify you and you have to fix them yourself.