What is an article?

• A. A type of verb
• B. A word used to modify a noun and define its definiteness
• C. A phrase that indicates a question
• D. A form of punctuation

Answer: (B)

An article is indeed a word used to modify a noun and clarify its definiteness, which aligns with the correct choice. Articles help indicate whether a noun is specific or general, as seen in the distinction between "the" (definite article) and "a" or "an" (indefinite articles). This modification is essential in English grammar because it helps provide clarity and context. For example, when saying "the cat," you refer to a specific cat, while saying "a cat" indicates any cat, not one in particular. Understanding articles is fundamental in constructing grammatically correct and precise sentences, allowing for effective communication.