What is the correct passive voice form of the sentence: "The baby has lost her doll"?
Explanation
The original sentence is in the present perfect tense (has lost). To change it into passive voice while maintaining the tense, the structure should be "has been" + past participle. Therefore, "The doll has been lost by the baby" is the correct passive form. Other options either use incorrect tenses or forms that do not match the active sentence.