Which statement is correct regarding the control of avionics and radio systems?

The statement regarding avionics and radio systems being affected by the Avionics Master Switch is accurate because the master switch is specifically designed to control the power to all avionics and radio systems within the aircraft. This switch allows the pilot to easily manage power to these systems, ensuring they are either operational or completely shut down when necessary to conserve battery life or reduce distractions.

When the avionics master switch is turned off, it effectively disconnects the power supply to those systems, meaning they will not function without the switch being in the "on" position. This integrated control is critical for managing the operational status of avionics equipment and ensures that power is controlled efficiently while minimizing potential electrical issues during flight.

In contrast, other options suggest independence from the avionics master switch or the ability of systems to operate without it, which isn’t typical in aircraft systems where the master switch plays a crucial role in power management.