Okay, I saw another question like this before. I cant write an essay for you. But I can give you pointers and tips.
Answer:
A
Explanation:
This line is not talking about his morals, or interests in general. So, from the given answers C and D are off the list from the possible answer. Now, because it says " not unacquainted", it is leaning toward the fact that he had basic or any kind of knowledge beforehand. So, the right answer indeed is A.
The last sentence about reliving the writers younger days as in memories
I think these are the answers:
A) My father doesn’t like dancing but I like dancing.
B) He failed his exam although he studied hard.
C) I didn’t attend my class yesterday because I was sick.
D) The phone rang while I was taking my online class.
E) We explore the internet so that we can learn many new things.