What Is the Primary Thrust of the Psychosocial Theory of Development

What is the primary thrust of the psychosocial theory of development?

A) ​There are five different stages of psychosexual growth, each of which contributes to our adult personality.
B) ​At each of eight different stages, people encounter a unique crisis that must be resolved for development to proceed normally.
C) ​Development is a dynamic process of interaction with our environment, where unskilled children are guided by more skilled adults.
D) ​There are four stages of cognitive development, and at each stage a child becomes more capable of understanding and utilizing symbolic thought.