Question

the role of the senate in regard to treaties is to
approve international treaties.
advise during negotiations.
have the president of the senate sign the treaty.
negotiate the terms and conditions of the treaty.

Explanation:

In the United - States, the Constitution gives the Senate the power to approve international treaties with a two - thirds majority vote. The Senate's main role is not to negotiate treaties (which is mainly the executive's role) or have its president sign treaties. It can offer advice during negotiations, but its key power is approval.

Answer:

A. approve international treaties