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:

1. both men a determined to break douglass.

2. douglass is still considered to be one of captain anthony's possessions.

3. douglass escapes to freedom in the north and changes his name.

4. the events are usually written from a distance in time.

5. the recording of events in chronological order.

2. list two reasons why fossil fuels should no longer be used as a source of energy in america.