“Many grocers switched back to single-use plastic bags and prohibited customers from bringing their own reusable bags.” --- “One company marketing single-use menus online provides an estimate of how many throwaway menus might be needed.” What does it mean if an item is single-use?

means you can only use it once and it can not be reused.

Explanation:

self-monitoring is in other words holding back your emotions for the better good. usually, people who can't hold their excitement, temper, or any other emotions, need to self-monitor themselves.   lol

c, his tragic flaw to cause his downfall