Which statement about min.insync.replicas best describes its effect on write durability if a broker goes down?

• A. The maximum lag allowed between leader and followers.
• B. It determines the number of in-sync replicas automatically.
• C. It sets the minimum number of replicas that must exist in the cluster.
• D. The minimum number of in-sync replicas that must acknowledge a write for it to be considered successful. If fewer than this number are in sync, the broker will reject the write to prevent data loss.

Answer: (D)