I would say (b) because this answer is the most focused. It's also a topic which would easily fit in a five paragraph essay, while the others would most likely require extensive research and would only fit in an at least ten page paper.
Answer:
to prevent the diseases from spreading
Explanation:
this is because immigrants are returned back so that it can be controlled
the answer is c
Explanation:
I took the test and got it right
Shortly after the Achaeans set sail from Thrinacia, Zeus kicks up another storm, which destroys the ship and sends the entire crew to its death beneath the waves.