Homeostasis is the basis for which theory of motivation? instinct theory arousal theory drive theory need theory hierarchy of needs theory

The answer is Drive Reduction Theory. It is built on the notion that we are determined by basic biological needs like food, water, shelter.  Needs motivate our behavior to search for homeostasis (balance) in our physiques.  If we miss breakfast, we feel starving.  The hunger need energies us to look for food so that we try to get rid of the starvation, as a result bringing us back to a homeostatic condition.  These determinations can either be primary or secondary.

Yes you are cute answer theories to explain the colonization of the new world the last great habitable landmass to be occupied by humans focus on the bering land bridge, or beringia, which emerge by siberia and alaska the last ice age.