Question

Frank told Janet to "break a leg" and gave her a thumbs up right before she performed. This was...

idiom
metaphor
onomatopoeia
hyperbole

Answer 1

Idiom

hope this helps

:)

Answer 2

Idiom.

Step-by-step explanation:

Idiom is a commonly-said phrase with a different meaning than the meaning of the words composing it.

Frank wasn't actually telling Janet to break a leg, he was wishing her good luck.

Hope this helped!