What is a variation of a phoneme that does not change the meaning?

• A. Phoneme
• B. Allophone
• C. Morpheme
• D. Lexicon

Answer: (B)

A variation of a phoneme that does not change the meaning is referred to as an allophone. Allophones are the different sounds or pronunciations that a single phoneme can have, depending on its context within a word or sentence. For instance, the phoneme /t/ can be pronounced differently in the words "top" and "stop." In "top," the /t/ is aspirated, while in "stop," it is unaspirated. Despite these variations, the meaning of the words remains unchanged; hence, these different pronunciations are allophones of the same phoneme.

In contrast, a phoneme itself is the smallest unit of sound that can distinguish meaning between words. A morpheme is the smallest unit of meaning in language, which can be a word or a part of a word (like a prefix or suffix). The lexicon refers to the vocabulary of a language, including its words and their meanings. These terms focus on different aspects of language structure and do not specifically address variations in pronunciation that do not alter meaning.