The difficulty she was having involved phonemes.
Hence, correct option is B.
- A phoneme is a sound or a group of sounds that speakers of the language or dialect in question perceive to have the same function.
- The English phoneme /k/, which appears in words like cat, kit, scat, and skit, is an example.
- In linguistics, a phoneme is the smallest unit of speech that distinguishes one word (or word element) from another, such as the element p in "tap," which distinguishes that word from "tab," "tag," and "tan."
To know more about phonemes here
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