An RPAS will ascend by:

The correct answer reflects the concept of how a Remote Piloted Aircraft System (RPAS) generates lift. An RPAS ascends by increasing the load on all motors simultaneously. This is achieved by the motors speeding up, generating greater thrust, which in turn allows the aircraft to rise off the ground. Each motor plays a role in creating lift, and when all motors work together to increase thrust, the overall lifting capability of the drone is enhanced.

The other options describe changes in load that do not result in a coordinated effort to generate lift. For instance, decreasing the load on all motors would result in a loss of thrust, making it less likely for the craft to ascend. Similarly, increasing the load on only the clockwise or counterclockwise motors would not provide balanced thrust and could lead to undesirable yaw movements or instability, instead of a straightforward ascent. Hence, simultaneous increases in load across all motors create the necessary thrust for vertical flight, which is the fundamental principle behind how an RPAS ascends.