Read the sentence to find out whether there is any grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. The corresponding letter of that part is the answer. If the given sentence is correct as it is, then choose option ‘No error’ as the answer response. (Ignore errors of punctuation, if any).

Because he doesn’t have (A)/enough money to pay his (B)/ fees he did a part-time (C)/ job in the restaurant. (D)

Correct option is C

The sentence shifts between present tense ("doesn't have") and past tense ("did"). To maintain consistency, "did" should be replaced with "does" to align with the present tense used earlier. The corrected sentence is:
"Because he doesn’t have enough money to pay his fees, he does a part-time job in the restaurant."