this is called acquired immunity
The answer is probably A but it could be all of them.
If they are regarding more serious matters than it would be criminal, if it was something like your roommate didn't pay his or her share of the rent it would be civil.
Answer:
shrugs and grip exercises doesn't use core
Answer:
A. fitness instructor
Explanation:
that is what I would choose it is most physically active and you can teach it in both small or large groups
