Hello @BeckiCovington
Thanks for posting this in the global Canvas Community.
I was able to test this out and I think I have an answer for you on this.
With new quizzes, when using matching or categorization questions, the answer field does not allow you to upload images. This is because the Rich content editor is not an option. However you can upload images in the question stem area. The same rule also applies for Matching questions.
This is a bit of a work around, but I have seen some instructors use tables with images in the questions stem area. They will set up a table in the Question stem and then upload the images to the table. They will then make the answers correspond to the images placed in the stem.
I don't think there is another way to do this with those type of questions based on my testing with this.
Hopefully this helps!
-Colton