Answer:
He is overimitating his mother.
Explanation:
Overimitation can be described as a process in which children tend to copy their adults. The child might not even know why the adult is performing that task but still will copy the efficiently. Overimitation has been termed as scientists as a universal factor which results in complex traits.
Hence, when Benjy tried to copy his mother and rub the front of the microwave it can be described as overimitation.