A) chief executive
b) head of state
c) head of government
d) chief diplomat
e) commander- in - chief
f) legislator in chief
g) head of a political party

The then president Bush is ordering the movement of troops/soldiers based on the headline

one of the president's titles is the command in chief of the armed forces which means he is the top top general or the army,navy,etc and dictate where the troops go if he wanted to

since it is a movement of troops, i would go with
Answer E