The three powers that are exclusive to the Senate are:
- Try cases of the impeachment of federal officials - The Senate conducts the trial for officials impeached by the House of Representatives.
- Elect the President in the event of an Electoral College tie - If the Electoral College is tied, the Senate has the power to choose the Vice President, while the House chooses the President.
- Confirm Presidential appointments - The Senate has the authority to confirm or reject the President's nominees for federal positions, including cabinet members and Supreme Court justices.
- Ratify treaties - The Senate must approve treaties negotiated by the President before they become effective.
So, the correct responses are:
- Try cases of the impeachment of federal officials
- Confirm Presidential appointments
- Ratify treaties
(Note: "Elect the President in the event of an Electoral College tie" can also be considered, but the main powers typically emphasized are those directly related to the Senate's role in impeachment, appointments, and treaty-making.)