Professor Appledorn emphasizes that whether people flourish in later life depends on a continuous interaction among their inborn temperaments, their personal relationships, and their mental expectations regarding the aging process. The professor's viewpoint best illustrates a(n)

what are the choices? the multiple choices?

i will answer in the comments after the choices have been said.

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.

well 1 they have there leader that controls them

answer; primary memory;