I believe its both but if I had to choose one I'd say
you should not chew gum in class because it's rude
Why:
It makes it look like your uninterested and not listening
If you have a cell phone yes, most students would use it for social media but it may also be used for school related topics.
Answer:
a i believe not positive tho
1. If it is life threnting you can shoot someone if nessacry
2. If you or you child is in danger
3. If you need to defend yourself
Because you put your life on the line to save someone elses.
