The answer to this question is to whom and concern
Honestly google could help better since the majority of us don't know the book as well as you
An adjective is a descriptive word
In this sentence, "natural" is the adjective.
Wonder is used as a noun, so even though it is a descriptive word, it is used like it is an object, so IN THIS SENTENCE it is not an adjective.
"Grand" in "Grand Canyon" is part of the title, and is also not considered an adjective
Answer:
D. They realize that he is the only person who is willing to participate
Explanation: Because he has a lot of determination.
Charlie is chosen for the experiment because he is a hard worker who desperately wants to learn, despite the many setbacks and limitations he encounters. The researchers know this because Ms. Kinnian vouches for him.
This isn't English this is math! Why put it under English?