Which of the following statements about the development of make-believe play is true?

A) Make-believe play becomes increasingly self-centered with age.
B) Toddlers' first pretend acts are flexible and involve imitating a typical household activity, such as cooking.
C) Sociodramatic play gradually decreases during the preschool years.
D) Increasingly, preschoolers realize that agents and recipients of pretend actions can be independent of themselves.

D