Respuesta :
The correct answer is "painted" from the sentence "Awell-known artist painted my portrait."
This is the only sentence that is written in the active voice which makes this "painted" to be active and not passive.
This is the only sentence that is written in the active voice which makes this "painted" to be active and not passive.
The correct answer is: A well-known artist painted my portrait.
Indeed, this is the only instance that does not involve the use of a past participle construction (auxiliary verb be + past participle of main verb) verb in it.