There are sixty seconds in . . . . . . . . minute. A. a B. an C. the D. no article

The correct answer is: D. no article

A minute is a unit of time equal to 60 seconds, or one sixtieth of an hour. It is not preceded by an article because it is a general term.

The other options are incorrect because they are all articles. An article is a word that is used to modify a noun. In this case, the noun is “minute.” The articles “a” and “an” are used before singular nouns that begin with a consonant sound. The article “the” is used before singular nouns that are specific or unique. In this case, the noun “minute” is not specific or unique, so it is not preceded by an article.