C) Joining a club, as that is a social organization.
The first one should be "Fight or Flight". I'm not sure about the second one.
according to hairlossstressactions.com
"Yes, stress and hair loss can be related. Three types of hair loss that can be associated with high stress levels are: Telogen effluvium. In telogen effluvium (TEL-o-jun uh-FLOO-vee-um), significant stress pushes large numbers of hair follicles into a resting phase."
A. muscles doesn't come with puberty, it comes with weight training.