Question

Which sentence contains a noun clause
Whenever I walk my dog, I make sure to clean up after her
if you don’t limit your screen time, you could damage your vision
Sprinters need to drink a lot of water while they train
Job recruiters want to know what unique qualities a potential hire has

Answer 1

The sentence that contains a noun clause is:

"Job recruiters want to know what unique qualities a potential hire has."

In this sentence, "what unique qualities a potential hire has" is the noun clause acting as the object of the verb "want to know."