Final answer:
When switching fuel tanks during a motorhome road test, closely monitor the vehicle's performance for any disruptions and check the new tank's fuel gauge to ensure an adequate fuel supply.
Step-by-step explanation:
During a road test of a motorhome, when you switch fuel tanks, it is crucial to ensure there is no interruption in the fuel supply to the engine. This means you must monitor the motorhome's performance closely for any signs of engine sputtering or loss of power, which could indicate air entered the fuel line or there is an issue with the new tank. It's also essential to check the fuel gauge for the new tank to confirm it has an adequate supply of fuel. This practice ensures the continued safety and functionality of the vehicle.