An adverb is an adjective + a verb. Meaning, it's a word that describes what someone/something is doing during the action.
A (whistle) & C (referee) are both nouns - person, place, or thing.
D (red) is just an adjective - describing something
B would make the most sense, it's telling you what the referee does with his whistle.
Hope this helped!
It is a clause! Good luck
A kind of news or article
Don't you have a dictionary
<span>The correct answer is A. An interrogative pronoun is most likely used to introduce a question. The word "interrogative" means "relating to a question," so an interrogative pronoun must be a pronoun that relates to a question. Remember that interrogative pronouns are what, which, who/whom, and whose. These pronouns are used to ask questions. For example: Which book is mine? Who is at the door? What time do we have to leave? </span>
