Social connections are more strongly predictive of well-being in wealthy nations than in poor ones.This fact would be most clearly anticipated by

A) arousal theory.
B) hierarchy of needs theory.
C) instinct theory.
D) drive-reduction theory.

Passive euthanasia often involves the withdrawal of _____.

A) life-sustaining treatment
B) familial support
C) food
D) water and oxygen

The saclike structures found inside the synaptic knob containing chemicals are called__________

A) axon terminals.
B) synapses.
C) synaptic vesicles.
D) receptor sites.