A is your answer to the question :)
i believe it's D. The reader learns more specific statistics about the number of species, the evolution of the reef, and its size.
lmk if i'm wrong!
B.To gain financially by combining two peoples's labor
Answer: The student's homework was too difficult to be completed correctly.
Explanation: Lack of apostrophe in students. And randomly adding many didn't make sense to me.
