Answer:
A. It would best fit the paragraph. This is my answer but also my opinion.
Explanation:
Hope I can help.
Sentence A is the most likely choice. For example, B has no context to fit into, C is true, but would fit better in a different paragraph, and D is also true, but not likely to be chosen, because paragraph two is based on bringing people together.
B
It literally said it in the second sentence.
(D) IMPROVING CIVIVLIZATION
I DID ALOT OF READING
