Atiny red bird in a tree outside my window chirped while i practiced my flute solo for the winter concert. which part of this sentence is a clause? "my flute solo" "a tiny red bird" "while i practiced" "for the winter concert"

Give the choices to choice from, please.

they insisted that there was not enough time to learn everything.  

explanation:

if they were going to steal the answers that is simply because they insisted that there was not enough time to learn everything.