Your question is Decide What to Automate. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're shaping the QA approach for a product area that changes regularly, and you need to decide where automation will add the most value versus where manual testing is still the better choice.
How do you determine what to automate versus what to test manually?