Final answer:
The remote PIC should either follow normal sUAS operational procedures or land the unmanned aircraft immediately prior to loss of control.
This correct answer is 3)
Step-by-step explanation:
The action that the remote PIC (Pilot in Command) should take upon GPS signal loss depends on the specific situation and the plans in place for the unmanned aircraft.
However, a common approach would be to follow normal sUAS (small Unmanned Aircraft System) operational procedures. This means that the remote PIC should continue to control the aircraft using other available sensors and systems and fly according to the established guidelines.
In some cases, it may be necessary to land the unmanned aircraft immediately prior to loss of control if the situation poses a significant risk and there are no other viable options. However, this would depend on factors such as the altitude, flight conditions, and the capabilities of the aircraft.
This correct answer is 3)