Answer:
B.
Explanation:
The Dust Bowl was a series of dust storms that happened in the thirties, causing a drought.
A better education opportunity is not an example of a push
factor in migration. Push factor in
migration varies in many forms but mostly it leaves the people with no other
choice but to resort in migration rather than staying. A better education opportunity doesn’t leave
people with no choice, but just a better choice whereas the other choices like
religious and political persecution, poor economic or health conditions, and natural
disasters often leave people without choice but to seek better refuge.