Plz help.
What is the role of the U. S. State Department?

the u.s. state department functions as the diplomatic wing of federal government, handling the matters of foreign affairs with other nations.

Explanation:

their primary job is to promote american foreign policy throghout the world.

The US State Department functions as the federal government 's diplomatic wing, dealing with foreign affairs matters with other nations and international bodies. The primary job of the State Department is to advance American foreign policy around the world.

Explanation:

the answer is b, encourage free trade