Among the following phonetic terms, which represents the letter 'W'?

The term that represents the letter 'W' in the NATO phonetic alphabet is "Whiskey." This phonetic alphabet is designed to improve communication clarity, especially in situations where voice communication may be affected by noise or poor signal quality. Each letter of the alphabet is associated with a specific word to avoid confusion between similar-sounding letters. For example, "Whiskey" is distinctly recognizable, making it less likely to be misunderstood as another letter such as "Q" or "V."

The other terms, while part of the phonetic alphabet, represent different letters: "X-Ray" corresponds to 'X', "Yankee" corresponds to 'Y', and "Zulu" corresponds to 'Z'. Each of these words serves the same purpose of providing clear communication, but they do not represent the letter 'W'.