You can add a Show Your Work canvas to any question type! This allows you to see your students' process, while keeping the benefit of having Formative auto-grade responses.
Simply toggle the "Show Your Work" option at the bottom of any question:
Your students will be able to see the Show Your Work canvas and question side by side:
As the teacher, you'll be able to see both the student's question response and their drawing in your View Responses:
Just as with a Show Your Work question type, you can draw feedback on the your students' drawings, and send that as a feedback message!