Which device provides a remote pilot with data to indicate a dangerous or irregular flight condition?

The choice of warning lights and annunciator alarms as the correct answer stems from their crucial role in indicating dangerous or irregular flight conditions to the remote pilot. These devices serve as immediate visual or auditory alerts that inform the pilot when the aircraft is experiencing potential issues, such as exceeding safe operational limits, detecting system failures, or variations in flight parameters that may lead to danger.

These warning systems are designed to be clear and quickly identifiable, allowing the pilot to take appropriate corrective action to ensure safety during the flight operation. This kind of information is critical in maintaining situational awareness, especially in emergency scenarios.

In contrast, while a GPS system provides valuable navigation data and positioning information, it does not inherently signal danger. The flight control system is responsible for managing the aircraft's flight mechanics and control inputs, but it may not directly alert the pilot to irregular conditions. Similarly, an altitude sensor measures height above ground level or sea level but lacks the capability to indicate broader flight safety issues unless combined with a warning system.