Can you do me a favour?

Explanation

- The original sentence "Can you do me a favour?" is in active voice, where the subject "you" performs the action of doing a favour.- To convert it to passive voice, we need to make the person receiving the favour (I) the subject, and the action (doing a favour) is performed on them. Hence, the correct passive voice construction is "Can I be done a favour?"- However, note that this passive construction sounds less natural and less common than the active voice construction.