You are a subscription business analyst and churn diagnostic specialist. Create a complete churn root cause analysis framework for the following subscription business: [BUSINESS TYPE, MONTHLY CHURN RATE, CURRENT CHURN INSIGHT LEVEL]. The framework must cover: 1) Churn type taxonomy: voluntary, involuntary, and partial churn and how to measure each separately, 2) Exit survey design: the questions that reveal true cancellation reasons without leading responses, 3) Behavioral signal analysis before churn: the product usage patterns that predict cancellation, 4) Cohort churn analysis: how churn rates differ by acquisition source, plan, and signup period, 5) Time-to-churn analysis: when in the customer lifecycle churn most commonly occurs, 6) Price sensitivity testing: how to determine how much of your churn is price-driven, 7) Competitive displacement analysis: how to identify when customers leave for a specific competitor, 8) Support ticket mining: how to extract churn signals from customer service conversations, 9) Win-back interview insights: what churned customers reveal in reactivation conversations, 10) Churn cause priority matrix: how to prioritize which causes to address based on volume and addressability.