The needs to know and to understand are

A) innate.
B) learned in infancy.
C) not operative until self-actualization is achieved.
D) not found in any species other than our own.

Innate

Existing from birth, inherent, or naturally occurring without being learned through experience.

Self-actualization

The process of realizing and fulfilling one's own potential, capacities, and talents to the fullest.