Since the sensors have been initialized as Buttons from the GPIO Zero library, the function `.is_held` is required.
The final segment of the program will continuously check the sensor inputs to discern if the sensors detect anything. A 'router' of sorts, the main while loop repeatedly checks the inputs: `while True:`. Within this main while loop, sub-while loops can be constructed to poll the sensors specifically. Since the sensors have been initialized as Buttons from the GPIO Zero library, the function `.is_held` is required.