The correct answer is B) the North Vietnamese and Vietcong's war strategy was to avoid defeat until the Americans gave up.
They were always on the retreat and resorted to guerrilla warfare. They would hide, attack at night, set traps, and other similar tactics until they completely demoralized the American army.
It's A because it's a good amount that can fit a regular cup.
Mass media is communication so It depends on how we communicate with each other when anyone isnt close or it could be helping us with what the weather is so on...
B makes the most sense to me so I would go with that