Choose the sentence that contains an error.

Correct option is C

The error in the sentence "He is chef who specialises in Italian cuisine" lies in the omission of the indefinite article "a" before "chef."
· In English, the indefinite article "a" is used before singular, countable nouns to indicate that the noun refers to a general example of a thing, rather than a specific instance.
· By adding "a," the sentence correctly identifies the subject as a general member of the profession: "He is a chef who specializes in Italian cuisine."
· This corrects the grammatical structure and clarifies that he is one among many who may specialize in this area.