Answer:
The function of the commas in this sentance is to seperate the thoughts, one being "Isn't it fanciful notion that any adult could actually understand teenager's mind?" and "As our parents always said"
Parenthesis could be used instead of the commas.
Explanation:
Answer: metaphor
This is a comparison between two things that doesn’t use “like” or “as”, so it is a metaphor.
A. The father is determined to give answers for his kid.
Whenever repetition is used, it is used to bring attention to the main point, and to make it more memorable in the listener's minds. This makes you remember this phrase more, and makes you more likely to agree with it.