Hi @NikkiMatthews,
You'd have to change that setting for every question/answer. I would generally caution against doing that though, as it seems ot be better for fonts to have a consistent size throughout the system. Users who need bigger or smaller text would likely be using a zoom feature already, so manually changing the font size for quizzes could actually make things worse for your suers rather than better. Just my two cents as a Canvas admin though.
-Chris
