My 5 year old DS qualifies for DYS based on his IQ score. I have two questions about the application. Can anyone help me out?

1) When they ask, "In what areas does your child exhibit prodigious intellectual ability?" do they mean subjects like math or reading? He reads at a 5-6th grade level and about 3rd grade math even though he has never been to school (he's currently homeschooled).

2) Would an art teacher suffice for a nominator form? I know art samples did not suffice for samples under the previous criteria. That's pretty much the only teacher he has had this past year. Or, would maybe a family friend count if she is someone who has known my child for awhile and has a exceptionally gifted son herself? My son hasn't had any teachers yet since he's only been to preschool and we pulled him out soon after starting because he hated it.

Thanks for any advice or help you can give me.