C
D
A
these are correct answers I took this test last year
A credible peer-review source is from a source that isn't biased, or is not related to you. It is best to find someone who isn't one of your friends. Since they are credible, the source should be verified that they know what they are talking about as well. I hope this makes sense.
Ungrammatical is the correct answer
Answer:
B. The answer is B, because they give a number on how many people were killed.