Some people... get smoky because they don't their life and they get drunk but their parents get upset very bad their gets worse and worse that's my answer !
Answer:
I beleive it is D.
Explanation I really hope this helps, it's the only one that I cansee being the most accurate to the story.
It influences a lot because, as the story is evolving so is the setting.
It matters because, without setting there's no story.
I believe that setting is the most important part of a story because, it tells u many things..
For Example :
TIME /PLACE /BACKGROUND OF STORY /AND WHERE SOMETHING TAKES PLACE..
in the house, park, pools, hotels, movies, Etc....
Subjective Mood. I hope that helps! :)
A plot diagram is the answer