It would be considered a fragment
Answer:
6. What are you buying?
7. Do you play basketball?
8. What have you become?
9. What do they have?
10. What is she going to take.
Explanation:
6. I wrote this answer for the sixth one because it refers to ‘ What is she buying?’
7. Because the given sentence is already a question.
8. This is because the question refers to ‘ what have you become?’ because the second person will always say ‘ I have’ instead of ‘You have’.
9. This is because the sentence refers to ‘ What do they have?’
10. This is because the sentence refers to ‘ What will she take?’
Answer:
You read to find out the central idea the character or you learns
Explanation:
As you know theme is "broad idea or a message that is to be conveyed through a literary work." I think what would best work is you reading the book a couple of times and seeing what the central idea the character or you learned.
I hope this helped. I am sorry if you get this wrong.