Final answer:
Children play in the park to experience the world, develop interests, and engage in physical activity.
Step-by-step explanation:
Children play in the park because it provides them with a variety of benefits. Outdoor play allows children to directly experience and sense the world around them, collect objects, and develop interests and hobbies. It also promotes exercise, which is crucial for the development of a healthy heart and brain. Unfortunately, research shows that children today engage in less outdoor play, which contributes to alarming levels of childhood obesity.