It's an f clef not a c clef because it's located on the f note i would know considering the fact that i've played piano for 3 years
The answer is B) the only method for recording images of people.
you should only stay home if you or a love one is sick or there is a family emergency.
Knowing that you will be absolutely fine :) self awareness and care is very important. Having a conflict if your life can disturb your mental and physical stability.