Answer:
B. Impeaching federal officials.
Explanation: The senate has power to conduct impeachment trials, serving as jury and judge. "Since 1789, the senate has tried 19 federal officials, including 2 presidents" (senate.gov)
Step-by-step explanation:
The senate has power to conduct impeachment trials, serving as jury and judge. "Since 1789, the senate has tried 19 federal officials, including 2 presidents" (senate.gov)