1. suffix-less meaning- not helpful
2. suffix-ly meaning- going fast
3. suffix-ful meaning- hurting and object
4. suffix-less meaning- not thinking/ or uh idk
i really do hope this helped :)
The third sentence is the correct one
Because its different from the other ones and does not express it the same
It causes mental stress: Destructive relationship involves constant negative pressure, verbal abuse, mental and emotional torture.