I believe it is c but i can be wrong
Harlem in the year of 1930 is the setting of "the rockpile" , which is a place and period where "black people art's" started to gain fame.
based on that, i think the answer would be :
A. it seems to be outside mainstream society
Answer:
Did the plane take off + copy the rest.
Answer:
The ideal America embraces its diverse heritage