Select the sentence that uses active voice.
The back of the couch was scratched up by the cat.
Just before dawn, the cat wakes up and cries out to be fed.
The needy cat is fed by Celia.
The can of fishy-smelling food is eaten greedily by the cat.
Active voice means that the subject is doing the action of the verb. So ask yourself ...
1. is the back scratching?
2. is the cat waking up and crying?
3. is the cat feeding (someone else)?
4. is the can eating?
Let us know what you decide