Answer:
Noun clause (nominal clause )of the sentence.
Step-by-step explanation:
A clause is group of words containing subject (noun/object) and verb.
It may be independent, which means it makes sense on it`s own :
it is raining today. the subject IT is raining (performing an action)
she is happy. the subject SHE is (being) Happy. OR
Dependent:
Although she came ( needs to be completed)
Whatever the scores are....
If a group of subjects are all doing the same actions then they are either performing or being ( conjugated with the same verb) thus acting as a noun.
they normally include with relative clauses, that fact that..., when,... clauses
Example:
1.The fact is the dog is hungry. Dog is the head noun, the other words modifies, explains the dog better.
2. What we had for dinner was horrible. Dinner is the head noun.