Find the error if any in the given sentence.
Prateek doesn’t(A) look well today,(B) doesn’t he?(C) No error (D)

Correct option is C

The error in "Prateek doesn’t look well today, doesn’t he?" is in part C concerning the tag question.
• After a negative statement, the tag question should be positive. Therefore, "doesn’t he?" should be "does he?" to correctly form the question tag.
• The corrected sentence should be "Prateek doesn’t look well today, does he?" to properly balance the negative statement with a positive tag.
• Question tags are short questions at the end of statements, mirroring the auxiliary or modal verb used in the statement, and the polarity is usually reversed.