Which one of the following words is an adjective ?

Question

Accepted Answer

Option 2, "Useful," is the correct answer because it is an adjective. Adjectives are words that describe or modify nouns, providing more information about them. In this case, "useful" describes something that has utility or is capable of being used effectively. For example, in the phrase "a useful tool," the word "useful" describes the noun "tool," indicating that the tool has a beneficial function.

Now, let's examine why the other options are incorrect:

1. **Use**: This word is primarily a verb or a noun, not an adjective. As a verb, it means to employ something for a purpose (e.g., "I use a pen to write"). As a noun, it refers to the act of using something (e.g., "The use of technology is widespread"). It does not describe a noun, which is the primary function of an adjective.

3. **Using**: This is the present participle form of the verb "use." It is used to form continuous tenses or as a gerund, but it does not function as an adjective. For example, in the sentence "I am using a computer," "using" is part of the verb phrase and does not describe a noun.

4. **Usefulness**: This word is a noun, not an adjective. It refers to the quality or state of being useful. For instance, in the sentence "The usefulness of this tool is evident," "usefulness" is a noun that refers to the attribute of being useful, rather than describing a noun.

In summary, "useful" is the only option that functions as an adjective, making Option 2 the correct choice.