Which of the following covers all qualified higher education expenses? A. 529 prepaid tuition plan
B. 529 college savings plan
C. 529 Coverdell Education Savings Account
D. 529 federal college plan

Betray, destroy, and obey do not need to be changed to add the suffix -ed, because the "y" at the end of each word is preceded by a vowel  (so  they would be spelled  "betrayed," "destroyed," and "obeyed").

but hurry is different; it has to  be spelled "hurried" because the "y" at the end of "hurry" is preceded by a consonant.

Supporting details in expository texts serve a different purpose than supporting details in narrative text.
c.