What is the term for action in which children simply watch others at play,but do not actually participate themselves?

Question

Quizplus · Accepted Answer

The term for action in which children simply watch others at play, but do not actually participate themselves is called "onlooker" behavior.

The other answer choices refer to different types of play behaviors: 
A) Associative play is when children play alongside each other but without interacting or sharing toys. 
B) Parallel play is when children play next to each other but with their own toys, occasionally mirroring each other's actions. 
D) Functional play is when children engage with toys or objects in a functional manner, such as pushing a toy car or stacking blocks.

What Is the Term for Action in Which Children Simply