Choose the correct passive voice transformation of the sentence:
Who painted the Mona Lisa?
Show answer & explanation
Correct answer: A
Explanation
The original sentence, 'Who painted the Mona Lisa?' is in the active voice and is an interrogative sentence.
To transform it into the passive voice, the object ('the Mona Lisa') becomes the subject, and the subject ('Who') becomes the object, introduced by 'by'.
The correct structure for a passive interrogative sentence starting with 'By whom' is: By whom + auxiliary verb (was) + subject (the Mona Lisa) + past participle (painted) + question mark?
Option A follows this structure correctly, maintaining the interrogative form and appropriate grammar.