Final answer:
Peers provide the function of competition in active play, which is a learning experience about winning and losing, reflecting societal dynamics.
Step-by-step explanation:
One of the functions peers provide in active play is competition. This is seen in activities such as relay races or math contests, where children learn about winning and losing, which mirrors aspects of society. Furthermore, when children are required to work together on projects, they also experience the function of cooperation, practicing teamwork and social skills necessary for adult life and supporting the socialization process among school-aged children.