Most people are comfortable with the idea of a noun, but they may not feel so confident when it comes to the noun clause. A noun clause is a group of words acting together as a noun. These clauses are always dependent clauses. That is, they do not form a complete sentence. Take a look at some sample sentences containing noun clauses to understand their purpose and function.
D. is the answer because every look like old but their young
The answer is C
Because people are more likely to pay attention if its interesting
