What should be inspected daily on the MWS apparatus?

The daily inspection of the Mobile Water Supply (MWS) apparatus is crucial to ensure optimal performance and safety during operations. The correct answer focuses on inspecting the pump primer, auxiliary fuel tank, and hose lines, all of which play significant roles in the overall functionality and readiness of the apparatus.

The pump primer is essential for starting the pumping system smoothly without air in the lines, ensuring that water can be moved efficiently. Inspecting the auxiliary fuel tank is vital because it ensures that the equipment has enough fuel for operation, preventing the risk of running out during critical moments. The hose lines need to be checked for any signs of damage, leaks, or wear, as they are critical for delivering water from the MWS to the required locations. Overall, inspecting these components daily helps maintain the reliability and effectiveness of the MWS during firefighting or emergency responses.

The other options, although they mention important components of the apparatus, do not encompass the breadth of daily inspections needed to ensure the MWS is fully operational and safe for use. For instance, some focus narrowly on just a few parts, which does not provide a comprehensive check of all necessary systems.