Nhu and Joseph are chasing each other around the park and wrestling in the grass. This form of play is called

Rough and tumble play.

Explanation:

Rough and tumble play is a form of interactive playing between children that may involve rough plays like tumbling, wrestling, jumping, pretend fights, etc. This activity is an important aspect of a child's growth because it helps in the development of the physical, emotional, social, as well as cognitive aspects of a child's growth process.

In the case of Nhu and Joseph's playful antics, their wrestling chasing is a form of play called rough and tumble play.

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