When congress doesn't approve a president's choice for a federal court, this is an example of

a. filibuster
b. judicial review
c. veto
d. checks and balances

D. checks and balances

Explanation:

The Separation of Powers Theory, also known as the Checks and Balances System, represents one of the most relevant constitutional principles in the United States and in many other countries. This system points out that each sphere of power of a country (federal power, state power and municipal power) should balance between autonomy and intervention in the other powers. Thus, each power could not be disrespected in the functions it was supposed to perform. At the same time, when one of them was overly authoritarian or extrapolated his assignments, the other powers would have the right to intervene against such an inharmonious situation.

For this reason, when Congress does not approve the choice of a president for a federal court, this is an example of Checks and balances.

the answer is a, salt plain