please can someone answer this . i'v posted it so many times but no one answers

Question

Which is not an example of an idiom found in "Miss Rosie"?
a. "when I watch you"
b. "[you] used to be called"
c. "waiting for your mind"
d. "I stand up"

i know that idiom is an expression that is peculiar to a certainlanguage and that cannot be understood by a mere literal deinition of its individual words.
but i'm confused between A and B.
plleasee tell me one correct answer
thanks :)

Answer 1

A. is not an idiom.

Answer 2

so B?

Answer 3

No.

You question asks

Which is not an example of an idiom . . .

Answer 4

oops! sorry, yea i forgot

thanks a lot ms.sue i was waiting on this answer for a while

Answer 5

You're welcome.

(I think I answered it a couple of times.)