Cassandra's 2-year-old daughter seems to be strong-willed about doing things her own way. Cassandra says she is in the "terrible twos." You realize, however, that her daughter is simply trying to show .

The answer is autonomy.

Explanation:

Autonomy refers to the ability of a person to control his own actions and thoughts. Accordng to Erikson's stages of psychosocial development, children around ages one and three are in a stage called autonomy vs. shame. During this stage, children must learn to be independent and explore their surroundings. Otherwise, they might become insecure or "shameful": an especially common case for children with very restrictive parents.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.