In flight operations, what is an essential responsibility of a remote pilot regarding other aircraft?

An essential responsibility of a remote pilot concerning other aircraft is to avoid manned aircraft wherever possible. This is fundamental for ensuring safety during flight operations. Manned aircraft often have the right of way, and remote pilots must actively take steps to prevent any potential collisions or hazardous situations. By prioritizing the avoidance of manned aircraft, remote pilots can help maintain the safety of the airspace for all flying entities, ensuring that their operations do not interfere with traditional aviation.

The other options, while they may relate to certain aspects of operational safety, do not encapsulate the overarching responsibility of remote pilots as effectively. For instance, flying at a lower altitude might not always be practical or safe depending on the operational environment, and while communication with manned aircraft is important, it's not solely the responsibility of the remote pilot to establish this communication in all cases. Maintaining clear sight of all operations is crucial but focuses more on situational awareness than on the specific responsibility toward other aircraft. Overall, the principle of avoiding collision with manned aircraft is a primary concern in both regulatory guidelines and safe flight conduct for remote pilots.