Answer: The purpose of flashback is to either move the story forward or reveal information about the character. You can use flashbacks for any number of reasons but its primary purpose is to bridge time, place and action to reveal a past emotional event or physical conflict that affects the character.
Hope this helps!
Answer:
It could be either B or D, but I believe it's B.
Explanation:
Since this is not a controversial notion (driving drunk), I don't think there would really be any new sources of info.
In scenario 1, the character dyes her hair pink, which is considered to be in a way deviant. The people in the society around her shows examples of being against her decision, like when the teacher sends her to the office.
I'm not exactly sure what your asking but for animal diseases it would be a veterinarian