Your question is Release Readiness Criteria. 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 when a product is ready for production release?
Answer as if you are the QA Engineer responsible for release readiness. Focus on the criteria you would use, who must sign off, and how you handle unresolved defects, test coverage gaps, and deployment risk.