This question is incomplete. Here's the complete question.
Which among the function of communication discussed is what you use most in your life?
Answer:
Social interaction is the one that I, and probably most of us, use the most in our daily lives.
Explanation:
The functions of communication are information, control, motivation, emotional expression, and social interaction. This last one refers to the kind of communication we use in our daily interactions with people, as well as to grow bonds, personal relationships, and intimacy with our loved ones.
