Which sentence is in passive voice?
The hairline fracture could have been detected by an X-ray.
An X-ray could have detected the hairline fracture in his arm.
English
Question
Which sentence is in passive voice?
The hairline fracture could have been detected by an X-ray.
An X-ray could have detected the hairline fracture in his arm.
Answer
An X-ray could have detected the hairline fracture in his arm.
The sentence "An X-ray could have detected the hairline fracture in his arm" is in the passive voice because the subject of the sentence (X-ray) is receiving the action (detecting) rather than performing the action.