Which of the following is NOT a use of a definite article?

When the reader is aware of the precise identity of the noun, as in the following cases, use the definite article before any noun (singular, plural, countable, or noncount). When a specific noun has already been specified, use the article "the. When an adjective, phrase, or clause characterising the noun explains or limits its identity, use the article "the. When a noun refers to something or someone special, use the article the. 'The' is a superlative prefix. When a noun refers to an entire class, "the" is used; hence option B is not a use of a definite article.