Answer:
Weaning.
Step-by-step explanation:
The mother's milk is important for the child as it provides all the nutrition to the baby. The milk also contains important proteins and antibodies that provide immunity to the child.
Weaning may be defined as the process in which the infant are introduces to the diet instead of the breast milk. This process is only possible in animals as only mammals has the mammary gland to feed their young ones. This switching is important for the growth of the children.
Thus, the answer is weaning.