Question

Which is an example of a noun clause? A) that no one else liked B) which was under the bed C) that the tide is turning D) who didn't do their homework

Answer 1

Firstly it would be important to define noun clause in order to select one. 
It is "a dependent (or subordinate clause) that works as a noun. It can be the subject of a sentence, an object, or a compliment" it purpose might be "to name a person, place, thing, or idea"

It would say that the correct answer is C because it follows the rules to make a noun clause. It is introduced by that follow by a subject and its corresponding verb. 
I

Answer 2

Answer:

C) that the tide is turning

Explanation:

Tide is a noun. A noun is a person, place or thing.