Your question is Choose a Feature Success Metric. 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).
Your team is launching a new feature and different stakeholders are proposing different ways to measure success. Some want to optimize for adoption, others for engagement, retention, or revenue impact. You need to decide which single metric should be the primary measure of success.
How would you decide which metric should be the primary success metric for a new feature?