It has to be #3 because "but" is a conjunction, which is a part of speech that connects two words, sentences, clauses, or phrases. It isn't a living physical object and, therefore, cannot have a physical sensation such as numbness.
Sorry for being a grammar nazi. I know watcha meant.
My real answer is #2 because there are more art mediums than just drawing and there is people who are taught how to draw and are still able to produce creative works.