Answer:
on what they can do.
Step-by-step explanation:
If a person has some kind of disability, the best thing is to develop other things that they can do into more functioning and to use them in different and innovative ways.
Dough Landis shows an example by creating art despite his disability. He uses mouth, the organ used for talking and eating, to hold the object with which he creates the art.
He can do this on his own, he shows how he overcomes the limitation with a simple innovation.