Answer:
Push it away and say NO to vaping. Vaping is bad for you and your body. Try to help your friend stop vaping. Search up the consequences of vaping. Maybe you can help vape-addicted people end vaping!
Explanation:
The best answer to fill in the blank would be ''Bystander'' because as that role you can go tell any adult or higher authority to stop the fighting so you don't try to be a hero and get yourself hurt as well.
Answer: Connective Tissue
Hope that helps!! :)