Epenthesis is defined as

• A. A sound inserted between two consonants; usually schwa vowel
• B. Deletion of a vowel
• C. Replacement of one vowel with another
• D. Insertion of a vowel at the end of the word

Answer: (A)

Epenthesis is the addition of a sound inside a word to make pronunciation easier when two consonants come together. The most common realization is a vowel, often a neutral schwa, inserted between those consonants to create a smoother syllable structure. That’s why the definition fits: it’s about inserting a sound specifically between consonants. The other processes involve removing a vowel, replacing a vowel, or adding a vowel at the end, none of which describe inserting a sound in the middle of a consonant sequence.