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.
The correct answer is b, phagocytosis and infection
A newborn needs 4-5 bottles a day so if you bring 3-6 depending on how fast they drink and how much they like milk :)

B.Mood-altering chemicals derived from plants.
please correct my answer if its wrong