Is best known for his influential studies on racism and its effects on child development, and for becoming the first african american to be elected president of the american psychological association.
a. kenneth clark
b. francis
c. sumner
c. j. henry alston
d. richard suinn

What I know it's A. Kenneth Clark

speed

explanation:

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.