Change the voice: Do you understand what I mean?

To change an interrogative sentence from active to passive voice, the passive form must also remain a question. The object of the active sentence becomes the subject of the passive sentence, and the verb form changes to 'to be' + past participle, maintaining the original tense.

• The active sentence is: 'Do you (subject) understand (verb) what I mean (object)?' This is in the simple present tense.
• The object 'what I mean' becomes the subject. The passive verb for simple present is 'is/are + past participle'.
• The correct passive interrogative form is: 'Is what I mean understood by you?'
• Option A is grammatically awkward.
• Option B uses the past tense 'Was', which is incorrect for the present tense original.
• Option D changes it to a declarative sentence, losing the interrogative nature.