I believe the correct answer is A because that's the sentence you would start off with when introducing someone to another.
Length and structure, Im sorry if it’s wrong
Answer:
It's because books give us many education which helps us and also a friend is said a friend when he/her helps us so books are also our friends.
In my view
- Bullet points-
-Shortend/ summarized paragraphs/ sentences-
- Key ideas and details highlighted-
