In the book night what "joy" is wiesel talking about on page 14?

Which sentence from a student's reflective essay contains a subject and verb error and needs to be edited? a. in my opinion, some of the voters seemed to need more information about their candidates. b. the documentary showed that dollars are often used instead of rubles in russia. c. the research shows that jackets made of wool are warmer than those made of cotton. d. in my opinion, either the doctors or the chief administrator need to make a quick decision.

Does anyone know the answers to k12 1.18 unit test: the power of poetry (need answers asap)all the questions are here:

What statements best describes king's purpose in writing the letter?