Answer:
B. It emphasizes that not being able to learn French will have a major impact on Frantz.
Step-by-step explanation:
The use of personification in the underlined words "my books, which only a moment before I thought so tiresome, so heavy to carry - my grammar, my sacred history - seemed to me now like old friends, from whom I should be terribly grieved to part" suggests that the books have a human-like quality of being old friends. This use of personification highlights the importance of learning for Frantz and the value he now places on his books and his education. It emphasizes that not being able to learn French will have a major impact on him, as he now values education and recognizes the opportunity that he has missed.