A common social issue Loraine Hansberry wrote about in A Raisin in the Sun centered around which group of people: a)Latinos
b)Caucasians
c)African Americans

African Americans

Explanation:

It was about a struggling Black family, which opened on Broadway to great success.

i would say the answer is b. zigzag lines of the leaves. i believe this is the answer because zigzag lines go in different direction while the other options like: the vertical lines of the trees, the dotted lines on the road, and the curved lines of the park benches go in one direction.