Hello @cody_henrichsen
That is odd - the image should be larger if the one you uploaded is large. Did you upload this first to files or just directly to the question itself? When you go to student view or preview is it also small for you? It's a PNG or what type of file? It honestly may be best to contact Canvas Support directly for this issue. They can look at the specifics of the image, the quiz, the students, etc. By all means feel free to respond here with more details but it might be faster to speak with Canvas Support:
https://community.canvaslms.com/t5/Canvas-Basics-Guide/How-do-I-contact-Canvas-Support/ta-p/389767