Answer: Micro system
Explanation:According to Bronfenbrenner, as children grow, they will find themselves intertwined in different environments or ecosystems ranging from the home to the society , their involvement and interactions within such ecosystems is a contributing factor to thier development
The Microsystem level is the primary developmental influential levels of the ecological systems theory as it is the first environment a child finds him or herself in which a child has close interactions to family in the home, teachers and friends or peers at school or caregivers at daycare.