Which of the following sentence-starters is an example of a noun phrase?

A) Detectives began by questioning ...

B) Underneath the mound of old newspapers ...

C) Searching through the database ...

D) The most important clue ...

In the given choices, the correct answer that corresponds as a sentence starters is letter d, the most important clue. It is because of all the choices given, this sentence describes sentence starters for they are the ones responsible in giving students an idea to begin a sentence and they are used to begin or start an idea in which the sentence corresponds the most.