Answer. Wilson decided to use baseball as a backdrop for his play about African Americans in the 1950's. African Americans had their own league back then they were not permitted to play professional baseball..
Explanation:
D. Parallelism
The answer is parallelism because the structure of this excerpt stays consistent throughout these three sentences, it starts off with "it does not" in each sentence which creates a structure.
I would go with B based on the information provided here. However I would suggest that you go back and read through. It may make more sense the second time through.
The answer is B. "Britain should establish as many African colonies as possible"