Which is a support operation type for high-rise incidents?

In high-rise incidents, the "entire trip operation" refers to a strategy where the firefighting resources are mobilized to function efficiently throughout the entire height of the building. This operation type allows for coordinated efforts from multiple teams to support each other and effectively combat the incident. Utilizing the entire trip operation ensures that resources can be allocated at various levels of the high-rise, allowing for clearer communication, effective search and rescue, and efficient fire suppression. This operation is vital in high-rise scenarios, where conditions may change drastically with height, and varied approaches are necessary to maintain safety and effectiveness.

The other options represent different operational strategies or tactics that do not adequately address the complexities of high-rise firefighting. For instance, solo operations may lack the necessary manpower and support systems, while tactical retreats are generally employed in response to dangerous situations rather than as a proactive strategy. Simultaneous response may also refer to multiple teams operating separately and could lead to disorganization without the cohesive structure provided by the entire trip operation.