Which of the following options is the most suitable conversion of the following sentence into active voice?
Couldn't the cancer be stopped from spreading further by the doctors?
Show answer & explanation
Correct answer: A
Explanation
The original sentence, "Couldn't the cancer be stopped from spreading further by the doctors?", is in the passive voice. The subject ("the cancer") is receiving the action, and the doer of the action ("the doctors") is indicated by the phrase "by the doctors".
To convert this to the active voice, the doer of the action becomes the subject. The structure of the original sentence is an interrogative (question) using the modal verb "couldn't". The active voice conversion must maintain this structure and tense.
The subject becomes "the doctors".
The verb phrase changes from "couldn't be stopped" to "couldn't stop".
The object becomes "the cancer".
Option (A) correctly applies these changes.