Which situation best represents the president acting in the role of commander in chief?
a. negotiating an arms limitation treaty
b. vetoing a law that expands federal spending
c. delivering a speech on the fourth of july
d. ordering a military strike on a foreign target?

The best scenario that represents the president acting in the role of commander in chief is:

d.ordering a military strike on a foreign target

As a commander-in-chief, the President is charge of the U.S. Armed Forces (the Army, Navy, Air Force, Coast Guard, and Marine Corps). During wartime, he can decide on deploying troops and dispatching war ships. He can also give the go ahead for air strikes, bombings and invasions.