There must be services that make a quiz like this trivial to build. Something like SurveyMonkey or Google forms, but that lets the creator specify the right an

There must be services that make a quiz like this trivial to build. Something like SurveyMonkey or Google forms, but that lets the creator specify the right answers and gives person filling it in a score rather than saving answers to a data store. For this application, you'd need to be able to upload a picture for each question.