2 units, multiple choice. See attached.

I really need to get an A on these. Please help! I am so stuck.
I submitted this earlier this morning, and someone got the answers back to me, but I received a low C on 2 of the units and an F on the third unit. So many of the answers were wrong, I didn’t learn anything when studying the questions. And I have to take a final Thursday, so not having correct answers on the 3 units is not allowing me the ability to study.

THANK YOU