At what distance does the Final zone take over operations?

The Final zone is an important operational area within naval operations, particularly relating to air defense and surface warfare. It typically represents the last stage of engagement, where close-in weapons systems are employed to defend against threats. The correct range for the Final zone is from 8 nautical miles (NM) down to 3/4 NM. This range is critical because it encompasses the distance where vessels and platforms engage with threats that could potentially breach outer defensive layers and requires immediate response measures.

In this operational zone, the focus shifts to more tactical and precise weapon systems that are designed for close-quarter engagements. The distance specified ensures that forces can react effectively against targets that are in proximity, thereby enhancing the survivability and protection of naval assets. Establishing this range as the operational boundary allows for the efficient use of defensive systems and ensures coordination within the surface combat team's overall strategy.

The other distances listed in the choices do not align with this operational definition. They represent either too distant a range for effective engagement in a Final zone context or do not match the recognized distances used during military exercises and real-world operations.