What implication does setting condition zebra have on closures?

Setting condition zebra signifies a heightened state of readiness, particularly in response to potential combat situations or emergencies. Under this condition, the focus is on preventing the spread of fire, flooding, or toxic gas, which can endanger personnel and operational integrity.

By requiring that no closures may be opened without the Damage Control Assistant's (DCA's) permission, it ensures that all personnel adhere strictly to the established protocols for maintaining compartmentalization and preventing the further escalation of hazards. This measure is crucial for maintaining safety and effectiveness in damage control efforts.

The emphasis on requiring permission before opening any closures helps to maintain an organized approach to managing shipboard emergencies, allowing for a coordinated response that minimizes risks. Therefore, option C accurately reflects the operational protocols associated with setting condition zebra.