An abstract noun is something that you cannot experience with your five senses. You cannot see, taste, hear, touch or smell them.
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The answer is:
<span>D. John thought this sophistication would win the love of Ellen.
You cannot taste, hear, see, touch, or smell love.</span>
In “a red hat,” the adjective “red” is a modifier describing the noun “hat.” In “They were talking loudly,” the adverb “loudly” is a modifier of the verb “talking.”