What is the geographic area that OPFOR intends to keep free of enemy action?

The correct answer is the Support Zone. This area is designated to assist combat operations and provide essential operational support, often serving as a buffer region where OPFOR aims to keep free from enemy action to facilitate safe and effective operations for their units. The Support Zone includes logistics and supply areas, ensuring that friendly forces can be resupplied and reinforced without direct enemy interference.

Other options, although related to military operations, do not accurately define the specific geographic area intended for maintaining operational security and support. The Engagement Zone is typically where active combat occurs, while the Preemptive Zone might suggest an area targeted for offensive actions before enemy forces can attack. The Containment Zone would focus on restricting enemy movement or actions, but not necessarily keeping it free from action, as its primary aim is to control or limit enemy capabilities within a broader area.