Answer: The institution that initiates the process of socialization in a child's life is D. family.
Step-by-step explanation: Socialization is defined as the process through which a child learns the rules, customs and ideologies of the society from which he/she is part. The process of socialization allows children to develop the skills that are necessary for them to participate in their own society. Moreover, this process is initiated by the family of the child as they are the first ones with whom the child will interact. Also, the behaviour of the child will always be influenced by the way in which the members of his/her family behave. Furthermore, the child learns to differenciate what is good and what is bad from his/her family.