What did albert einstein need?

i'm doing an autobiographical poem bout einstein.

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.

Concise summary of the key points of your research that come before the body paper is called a(n)

Is the sentence the refree blew her whistle and both teams rushed onto the field a coumpound or simple sentence