Drag and Drop - Answer is correct, but Results show as Incorrect
I am working on a quiz that features a drag-and-drop question. The user is to select all correct answers (3 out of a possible 4 answers) and drag them to the drop oval. When I choose correctly and hit "submit," the appropriate "Correct" answer comes up, and I move on. However, when I review my answers from the Results page, this question always shows up as "Incorrect." Any ideas?
Here is the quiz. The question I'm referring to is the one titled, "DRAG-AND-DROP INTERACTION": https://360.articulate.com/review/content/3568e01c-b14c-4516-88c9-e235ea6936b4/review
For reference, the correct pictures are all the ones that are not rain. I added a Word doc with screen shots to show in a sequence what I'm writing about above.