Personnel eligible to reenlist in Zone C should have completed what minimum number of years of active military service?

The correct response is based on the specific reenlistment zones established by military regulations, which categorize personnel according to their time served. Zone C typically refers to service members with a significant amount of experience, specifically those who have completed nine years of active military service. This zone is designed for individuals who are seasoned in their roles, allowing the military to retain experienced members who have demonstrated a commitment to their service.

The other time frames mentioned do not align with the criteria for Zone C. Personnel with fewer years of service would fall into Zone A or Zone B, which cater to those with less experience. Understanding these distinctions is crucial for anyone involved in personnel and reenlistment processes.