Answer:
D. Sleeping for 8-10 hours a night supports teenagers’ mental development and guarantees that teens perform better in school.
Explanation:
Answer D gives the information relative to the central idea of the text (teenager's sleep). Answer A is very vague and just states that they <em>have</em> a special sleeping pattern that helps <em>something</em>. Answer D is more specific and gives just how many hours a teen needs and why/how it helps.
The underlined verb becoming, is present. So D. Present
I believe, the answers that best fit the question are;
1: A: The Burden of Things
2: F: The Value of Things
3: J: The Need for Things