B, the hook is to get the reader's attention.
Answer:
The author uses the word "metamorphosis" to describe the "four-stage process of change." They are introducing new vocabulary terms in a friendly context. They also may have included it because it's the most accurate scientific term for the process of growth undergone by the beetle.
Answer: Clark receives a letter that his aunt is coming to visit in Boston. She wants to see him and wants to stay with him if at all possible. He says, "of course". She has always been a part of his life to teach him about life and music. His personality is exhuberant at getting to share this awesome experience with her, even though she gave it up long ago. She still loves the world of music. She has taught him the love of music and believes that it is still in her heart even after she moved away. They are joyous to be together and experiencing all of this again, together.
Explanation:
