Which of the following would not be an example of audience feedback?
a.
“you have a lot of verbal pauses.”
b.
“your mannerisms are distracting.”
c.
“your speech flows quite well.”
d.
“your speech lasted ten minutes.”

not a or b

The answer is D. This piece of information is something that you would not need an audience to find out.

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.