The correct answer is letter c. Adverbs modify nouns. Adverb is a part of speech that modifies a verb, an adjective and another adverb. It is <span>a word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc. (e.g., </span>gently<span>, </span>quite<span>, </span>then<span>, </span>there<span> ).</span>
This is because an adverb is a word that modifies/describes a verb -he sings loudly-, an adjective -very tall-, another adverb -ended too quickly-, or even a whole sentence -Fortunately, I had brought an umbrella-. Adverbs often end in -ly, but some -such as fast- look exactly the same as their adjective counterparts. So, everything but answer C. is actually an adverb.
Hope this helps! I know the other guy answered but I wanted to anyway.
I also just noticed this was asked in 2016 but oops.
