Your question is Onboarding Funnel Conversion Metrics. 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 would you measure conversion through a customer onboarding funnel?
Define the funnel stages, specify the primary conversion metric, and explain how you would calculate and interpret movement between stages. Clarify the data needed and how you would handle users who skip steps, return later, or fail to complete onboarding.