Answer:
b. a subculture
Step-by-step explanation:
In sociology, the term subculture refers to a culture that exists within a larger culture that has its own values, practices and beliefs. Bodybuilders are actually an example of a subculture since they are different from the rest of the culture and tend to have their own practices and values.
In this example Suzanne wants to be a bodybuilder and she meets people in the gym and they are involved in social activities together. Since bodybuilders are actually an example of a subculture (a culture within a culture with its own values, practices and beliefs), Suzanne and her friends would be a subculture