Hoover believed that the best way to end the depression was through

a. a military crackdown.

b. direct federal aid to the jobless.

c. bold, new laws.

d. voluntary controls by american businesses.

What Hoover believed was that the best and most effective way how one can end the depression during the 20th century was through voluntary controls by american businesses - d.

While some would argue his ideas were slightly radical, he also had supporters.