Explanation: Section 2
"Cooley theorized that the sense of self is formed in two ways: by one’s actual experiences and by what one imagines others’ ideas of oneself to be—a phenomenon Cooley called the “looking glass self.”" -Britannica
Answer: Section 3
Primary agents are:
- Family
-Friend Group/ Peer Group
-The Mass Media (social media, magazines, etc.)
-School
Sorry if this didn't explain a lot to you, tell me if you need a more in-depth explanation!