What is the correct passive voice form of the sentence: 'The boy has rung the bell'?
Explanation
Option D is the correct passive voice transformation of the present perfect active sentence 'The boy has rung the bell.' It correctly uses the present perfect passive form 'has been rung.' Option A is incorrect because 'has been being rung' is an awkward and rarely used continuous perfect passive form. Options B and C use past tense forms, not matching the present perfect tense of the original sentence.