Answer:
The option that represents a specific Senate responsibility different than the House's responsibilities is a) I only (ratifying all treaties).
Explanation:
The Constitution gives the Senate or upper house the power to approve treaties conducted by the executive branch. This ratification is done through a two-thirs majority. The Senate may also amend a treaty or adopt some change to it.
Another power the Senate mantains to itself is the power to confirm the presidential appointments, although the consent of the House of Representatives is required to confirm the Vice President.
