How can the Senate check the actions of the President? A) by issuing a pardon

B) by refusing to confirm a Presidential nominee such as a Federal judge.

C) by ruling that a law is unconstitutional

D) by vetoing a proposed bill

The answer is D

Explanation:

The Senate also checks the President by having the power to approve or not approve the treaties he makes with other nations. The Senate also approves the appointments that the President makes to his Cabinet, ambassadors, federal judges, and all civilian employees of the government who are not covered by another area.

the answer is b, encourage free trade