Children ages 3 years and younger share most often for:

The right answer is non-empathetic reasons such as fun or out of imitation. Various investigations have shown that children before the age of 7 have a very egocentric behavior, do not perform actions unless you get something in return, such as attention, fun or food. Also, their behavior is governed by the principles of classical conditioning, which is why most of their behavior is done by imitation.

I hope my answer can help you.