Question

Select the sentence that uses a noun clause to combine the ideas below. Also identify the function of the noun clause.

Water aids digestion. It is really true.
That water aids digestion is really true.
Water aids digestion; it's really true.
It is really true where water aids digestion.
Water that aids digestion is really true.

Answer 1

The correct answer is: That water aids digestion is really true.

Step-by-step explanation:

A noun clause is defined as a group of words that work as a noun, these clauses are not independent, that means they can't form a complete sentence by themselves, they will always need some other words to make sense.

It's easy the identification of a noun clause, you just have to look for words like how, that, what, whatever, which, whim, why, etc.

But this is not the only way we can identify it from a sentence. In this case the noun clause is acting as an object direct, which is one of her many roles. How can we know this? By making the following question: "What is really true?" and the answer will be: "That water aids digestion."