The font size for quizzes is very small. It would be nice to be able to make larger fonts.
Our plans for 4.6 include a complete rewrite of the Comprehension Quiz page, making it more like a normal page from the author’s point of view, including control over font size. You can see the mockup here.
This has now shipped in Bloom 4.6.
Note : while the new QUIZ features are there in 4.6, users won’t see these changes in Bloom Reader until Bloom Reader 2.0, which is still in alpha release. We are hoping to get Bloom Reader 2.0 to Release stage in October 2019. In the meantime, users of Bloom Reader 1.3 will still be able to use the quizzes, but they will not show custom formatting.