What should be evaluated when selecting a site for setting up a mobile water supply?

Answer: B — Proximity to fire location, terrain, and access for other units

When selecting a site for setting up a mobile water supply, evaluating the proximity to the fire location, the terrain, and access for other units is crucial. This ensures that the water supply can be established close enough to effectively support firefighting operations without delays. Proximity to the fire allows for rapid deployment of resources, which is vital in emergency situations. The terrain assessment helps identify whether the area is suitable for vehicle access and if it can support the weight and operational needs of mobile water supplies. Additionally, ease of access for other firefighting units is essential for coordinated efforts during an incident, allowing for the quick transfer of personnel and equipment. All these factors contribute to an efficient water supply operation in a high-pressure environment.