What is the function of a hyphen in writing?

The function of a hyphen in writing centers on its ability to form compound adjectives or join prefixes, making option B the correct choice. When two or more words work together to describe a noun, a hyphen connects them to clarify that they function as a single adjective. For instance, in the phrase "well-known author," the hyphen eliminates ambiguity and indicates that the author is well known, rather than suggesting that there are multiple well and unknown authors.

Moreover, hyphens can link prefixes to the words they modify, as in "re-enter" or "co-author," ensuring clarity in communication. This precise use of hyphens enhances the readability of written text and prevents misinterpretation, which is essential in effective writing.