The slats are powered by which hydraulic system(s)?

The correct response is that the slats are powered by the Green and Blue hydraulic systems. In the A320 aircraft, the slats, which are crucial for enhancing aerodynamic performance during takeoff and landing, typically operate via these two hydraulic systems to ensure redundancy and reliability.

Using both the Green and Blue systems allows for enhanced operational safety; if one system were to fail, the slats could still operate through the remaining functional system. This dual system approach is part of the aircraft's design to mitigate risks and maintain control during critical phases of flight.

The Green hydraulic system is responsible for several flight control operations, while the Blue hydraulic system offers an alternative source, ensuring that slat extension and retraction can occur effectively no matter the situation. This design reflects the importance of hydraulic redundancy in modern aircraft systems, thus ensuring safe and efficient operation.