What feature of the 25K loader allows it to align with aircraft floors?

The feature of the 25K loader that allows it to align with aircraft floors includes multiple capabilities that enhance its adaptability and utility. The ability to roll the deck from side to side assists in adjusting to any lateral variations in the aircraft’s height or structure, ensuring that the loading process is level and secure. Additionally, having the capability to tilt the deck forward or aft allows for alignment with changes in the aircraft's height or angle, which is crucial for effective loading and unloading. The capability to raise and lower the deck is vital as well, enabling the loader to match the specific height of various aircraft floors.

Taken together, these features—side-to-side rolling, forward or aft tilting, and raising and lowering—provide comprehensive alignment with different aircraft configurations, making the option encompassing all these functionalities the most accurate choice.