Agroup of ideas, assumptions, and generalizations that interpret and illuminate observations that have been made about human growth is referred to as a theory.

a. developmental
b. behavioralc. psychoanalyticald. humanistic

a. developmental                

Explanation:

Developmental theory: In psychology, the developmental theory is defined as one of the scientific approaches that focus on to describe consistency, change, and growth throughout the life span of an organism including animals and human beings. It also aims at the development of an individual during his or her childhood as this is the period because of which the changes occur in his or her life.

Therefore, developmental theory provides a framework for comprehending an individual's thought, development, and behavior.

In the question above, the given statement signifies the developmental theory.