Being “social” involves physically communicating with another, so your best answer is most likely 2. Bonding and Communication as a Student.
Itching is activated by a chemical called histamine. It's associated with our immune system. It is what causes the red marks and itching from bug bites.
We cannot see the information however whatever the thing is such as “The girls went for a walk.” You would switch it to “They went on a walk.”
B: an extended definition
I think it’s A. It says that there is little work to be done, and that could make someone bored.