Your question is Choosing Tests for Automation. 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).
How do you determine which test cases are the best candidates for automation? Explain the criteria you use to balance regression value, repeatability, stability, execution frequency, risk, and maintenance cost. Also identify cases that should remain manual and describe how you would choose the appropriate test level, such as API, unit, or UI automation.