I am not a developer rather a K-12 outreach person. I work with teachers and I have been helping teachers with creating Moodle courses. I have really gotten interested in the different types of Quiz questions. The one in particular is Drag and Drop onto Images. I like this question type and it offers teachers the ability to create their own tests particularly in Biology, Anatomy, etc... classes. I also like the Drag and Drop Markers better. However, teachers are not going to want to spend the time making up the Drag and Drop Marker questions because of setting up the drop zones.
I didn't find the right solution from the Internet.