How can federal courts check the power of congress

The Supreme Court and other federal courts  can declare laws or presidential actions unconstitutional in a process known as judicial review. By passing amendments to the Constitution, Congress can effectively check the decisions of the Supreme Court

Explanation:

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

the answer is most likely d