The correct word should be "Schildert" as verft would normally imply colouring textile or maybe painting a wall, not a making a painting!
Perhaps this question is asking about what Rembrandt used to paint his walls. (It was probably paint, but who knows? Maybe it was soup. Or blood.)
boy that escalated quickly o.O
I chose "geverfd" from the multiple choice. Does this still make a sound sentence, especially given Rembrandt has been dead since 1669?
To use "geverfd, you would need a different word order as well as an extra "to have" in there: Heeft Rembrand altijd met verf geverfd.
I did the same experiment, too bad duo refused to cooperate