Which VHF radio and RMP are available when on emergency generator power only?

When operating exclusively on emergency generator power, the available VHF radio and RMP (Radio Management Panel) are VHF 1 and RMP 1. This is due to the design of the aircraft's electrical and communication systems, which prioritize the first VHF radio and its associated RMP for critical communication during emergency situations.

In the event of a power loss or failure of the primary electrical systems, the emergency generator is tasked with maintaining essential avionics functionality. The selection of VHF 1 and RMP 1 ensures that the most important communication channels remain operational for flight crew, facilitating necessary communications for safety and coordination, especially during emergency protocols.

The other options do not provide the correct response because they involve configurations that are not supported by emergency power alone, as they either utilize secondary systems or radios that aren't essential in an emergency communication scenario. This prioritization is aligned with standard operating procedures that enhance safety and reliability in critical situations.