Language variation i think
Happy to help
I'm not 100% sure because it's been a while since I have read the book, but I want to say it's B or the second choice given.
Vital could mean something that is important or essential.
For example: the lungs and heart are both vital organs in the human body.
The answer is D, Music. He was a musician who played the keyboard and sang wonderfully. Sadly he died in 1974.
