They are the author's memories and impressions with the man he based Life of Pi off of. If you read the introduction(which is all in italics) he talks about how he came to write the book, and one thing the author mentions is the first meeting of real-life Piscine. So while the story is going on, the author adds in his thoughts on the main character.
The answer is c how I know because my grandpa is a framer and he used his hands the most
The answer is D: to show that ethers are many
Because people feel the need to continue acquiring more things that they do not need but want without realizing
