Explanation

The word "neutral" is correctly classified as an adjective because it describes a state or quality of a noun. Adjectives serve the purpose of modifying or providing more information about nouns, which can include their characteristics, quantities, or qualities. In the case of "neutral," it typically signifies a lack of strong feelings, preferences, or biasoften used in contexts such as politics (e.g., a neutral stance), colors (e.g., neutral tones), or environments (e.g., a neutral space).

For example, in a sentence like "The diplomat took a neutral position in the negotiations," "neutral" modifies the noun "position" by indicating that the stance is impartial or unbiased. This contrasts with the other options:

- An adverb (Option A) modifies verbs, adjectives, or other adverbs and typically ends in "-ly," which "neutral" does not.
- A noun (Option B) represents a person, place, thing, or idea, which "neutral" does not, as it describes rather than names.
- A verb (Option D) is an action word or state of being, which "neutral" is not.

Thus, "neutral" fits the definition of an adjective perfectly, confirming that Option C is the correct choice.