From where does hydraulic power for the landing gear come?

The hydraulic power for the landing gear comes from a hydraulic power pack. A hydraulic power pack is a self-contained unit that includes a pump, reservoir, and other components necessary to generate and deliver hydraulic pressure for various systems, including the landing gear. In aircraft operations, hydraulic power packs are specifically designed to provide the necessary force to deploy and retract the landing gear, ensuring safe takeoff and landing.

This option is correct because the hydraulic power pack is engineered to be reliable and efficient, making it ideal for the dynamic requirements of landing gear operation. Other systems, while they may contribute to overall hydraulic performance or be involved in hydraulic operations, do not primarily serve as the dedicated source of power for landing gear.