Why is the president the only person allowed to conduct measures of foreign policy?

Yes, the President is only one to who is allowed to conduct measures of fiscal policies.

The president is the only authorized person who is allowed to conduct foreign policies. He/she is having the supreme power in America. The president negotiates the treaties with the foreign countries. After that treaties comes into force only if is ratified by two third of the senate.

In USA, President is the commander in chief of US armed forces so it also has so many authorities over the armed forces. Ambassador and Secretary of state are appointed by the President along with the "Consent of the Senate".

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services