Which best explains the motivation of a student who wants to graduate at the top of her class?
(A) Belongingness need
(B) Influence of an individualistic culture
(C) Optimal arousal
(D) Influence of oxytocin and vasopressin
(E) Growth needs

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.