Before each flight, what must the Remote PIC ensure about the sUAS?

The correct choice indicates that the Remote Pilot in Command (PIC) must ensure that any objects carried on the small Unmanned Aircraft System (sUAS) are secure before each flight. This is critical because loose or improperly secured items can affect the sUAS's stability and performance during flight. If items shift or become detached while the sUAS is airborne, it can lead to a loss of control or even an accident, posing safety risks not only to the sUAS but also to people and property on the ground.

In ensuring the security of objects carried on the sUAS, the Remote PIC is also adhering to safety regulations that require pilots to operate their aircraft safely and responsibly. This consideration is an essential part of pre-flight checks to help mitigate risks during operation.

While it is important for the Remote PIC to check battery levels and be aware of weather conditions, and although filing flight plans might be necessary depending on the operational context, the statement concerning the security of carried objects is directly related to the immediate physical operation of the sUAS during flight.