Which of the following situations will activate the landing gear position warning?

The landing gear position warning system is designed to alert the pilot about critical conditions regarding the landing gear's status, ensuring safe operations during landing phases. In this instance, the correct answer includes all the situations listed, each of which can independently trigger the landing gear warning.

When the gear handle is not down while the flaps are in the landing configuration, the warning activates to alert the pilot that the aircraft is not properly configured for landing. This is crucial because landing without the gear down can lead to catastrophic outcomes.

If the landing gear is not locked and the flaps are set to takeoff, it indicates a potential issue with the gear system that needs immediate attention. The warning ensures that the pilot is aware of this situation, as it could compromise flight safety.

Lastly, if there is weight on the wheels but the gear handle is not in the down position, this also prompts the warning system to activate. This scenario indicates that the aircraft is likely on the runway or very close to landing, requiring confirmation that the gear is down and locked before further action is taken.

Thus, since each situation outlined can lead to the activation of the landing gear position warning, the choice that encompasses all of them reflects a comprehensive understanding of the system's operation and purpose.