Which of the following properly describes the role of cooling in the cycle of operations?

The role of cooling in the cycle of operations primarily involves the reduction of heat that builds up after firing. When a firearm is discharged, a significant amount of heat is generated due to the rapid combustion of gunpowder and friction within the mechanism. If this heat isn't adequately dissipated, it can lead to various issues such as malfunctions, decreased accuracy, and damage to the firearm over time.

Cooling systems or mechanisms help maintain the operational integrity of the firearm by ensuring that it can continue to function safely and reliably. The cooling process helps ensure that the components do not overheat, allowing for smoother operation and consistent performance during extended use.

Other roles mentioned, such as facilitating cartridge feeding, locking the action, or extracting spent cartridges, do not directly relate to cooling. Instead, they pertain to the specific mechanics of operating a firearm rather than the broader aspect of managing heat generated during firing. Thus, the correct answer specifically points to the function of cooling in maintaining optimal performance by managing heat levels.