Answer:
Rough and Tumble
Explanation:
According to my research on studies conducted by various psychologists, I can say that based on the information provided within the question these children are engaging in Rough and Tumble Play. This term refers to as physical actions or behaviors, such as chase and play fighting, that are accompanied by positive feelings between the participants. Which is what Heidi, Peter, and Eric by wrestling each other in the trampoline for fun.
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