Which of these is the best way to avoid gun violence?

the best way to prevent gun violence is a background check thats more abrupt meaning you can't sell a gun without a permit nor hold one

Explanation:

This can also be prevented with making it illegal to hold a concealed weapon until your 21 years old. 18 year olds now can have a concealed weapon.

for the background check... people need to make sure that hunting rifles are also for background checks. sometimes people don't do them for hunting because they think your selling it or animals only. Also that it is illegal to sell a weapon in a pawn shop. these are in my opinion are options to reduce gun violence

If you have any questions feel free to ask in the comments.