Why is the Federal Reserve Act considered the most important law Wilso

Why is the Federal Reserve Act considered the most important law Wilson passed?

a. It instituted the first income tax, which still exists today.
b. It settled disputes among Democrats and Republicans.
c. It imposed necessary controls on banks, and still exists today.
d. It won him great public admiration, securing his second term.
e. It made the United States the richest country in the world.

ANSWER
C