Heilker claims that autism is a highly rhetorical phenomenon because
a) The fact that autism is still not understood well (its causes aren't clear) means it is the center of heated debates
b) Autism is subject to verbal and visual arguments that construct definitions of it; most people only know autism from popular culture
c) Autism is associated with whiteness, creating an exclusionary sense of what autism is and how can have it in a way that has tangible policy implications
d) All of these answers