In which sentence does the introductory word to the noun clause function as an adverb? a) she could not decide which scandinavia flag was her favorite. b) the historian said that the flag was 200 years old. c) whatever my supervisor advised, i did. d) i do not know when the flagpole was painted.

Option correct is D

I do not know when the flagpole was painted.

In this case, the pronoun <<when>> introduce a noun clause and its function is to be an adverb.

A relative adverb introduces a clause, which has as an antecedent a noun. Relative adverbs are usually used insted of a relative pronoun plus a preposition.

There are three main relative adverbs:

SHORT VERSION: There is no smoke without fire is a proverb or saying which explains about some rumours or assumptions.

Above saying explains that as smoke won't be liberated unless there is presence of fire any rumor or news wont get spread without any initiative.

So behind any rumor the will be a chance of truth in most of the cases.

LONGER VERSION: As the saying goes, "there's no smoke without fire", it is rue to say that there is always some truth to whatever has bee implied. This is used majorly in the case of spreading rumors or some events though without the presence of any evidence to prove it.

When anything is implied, but there is no proof whatsoever, it is safe to assume that there is some truth to whatever has been implied. Once a person says something like an accusation or even a false rumor or implication, there must be some truth behind it for the rumor to start. If someone implied that he heard someone tell about an upcoming market fair, it can be implied that he got the information from somewhere else or he wouldn't have just come up with the knowledge by himself. he heard someone say something about it and then decided to tell someone else and thus help spread the information. Though he did not possess any evidence or proof of the fair, there is some truth behind it. Just like smoke cannot come or be made by itself and requires a fire to get smoke, there is always some truth behind any accusation or rumor.

Explanation: