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!
Answer:
this will help you mentally and be prepared to face obstacles in the future
The man wants to meet the paitent.
what is this even supposed to be
A non-count noun is one the cannot be made plural.
The non-count noun in this sentence is rain.
