What is the function of a portable monitor in firefighting?

Answer: B — To allow for remote nozzle operation and direct high volumes of water

A portable monitor is specifically designed to allow for remote nozzle operation while directing high volumes of water onto a fire. This equipment can be set up quickly and provides firefighters with the ability to engage in firefighting operations from a safe distance, which is particularly important during situations where close proximity to the fire can be hazardous. By using a portable monitor, firefighters can effectively manage large water flows, making it possible to suppress flames over a wide area without requiring personnel to be positioned directly at the fire front. This capability enhances safety and efficiency on the fireground, allowing crews to protect structures and minimize fire spread while maintaining a safe operational distance. In contrast, measuring air quality, increasing pressure in hoses, or storing equipment does not pertain directly to the primary function of a portable monitor, which revolves around water delivery in high-volume firefighting scenarios.