In looking at the progression from solitary to parallel to onlooker to social play, the best way to describe the developmental changes that occur is that play becomes .

Play is a crucial factor in the development of children.

Explanation:

Playing is a way to have fun. Any activity that a child derives joy in doing is "play". As children grows, they pass through distinct stages of play from the day they were born till when they continue growing.

Children develop emotional and social skills across their lifespan and this affects the way they communicate and relate with teachers, family members, friends and others people. The progression from solitary play to social play is a crucial factor in the development of children.

answer; /// i believe the correct answer is general act charters;

answer; ethnocentrism;