Describe the QX55's rear-seat design.

The QX55's rear-seat design featuring a 60/40 split-folding rear seat provides versatility for both passengers and cargo. This design allows drivers to adjust the rear seating arrangement depending on their needs, making it easier to transport larger items while still accommodating passengers. The split-folding capability means you can fold down either side of the seat independently, enhancing the overall flexibility of the cabin space. This thoughtful design addresses the practical needs of customers looking for a blend of comfort and utility in a luxury vehicle.

The other options do not accurately represent the QX55's rear seat features. A fixed rear seat structure would limit adaptability, while removable rear seats would detract from the vehicle's overall integrity and safety. Reclining rear seats, while providing comfort, are not the defining feature that enhances usability in the same way the split-folding capability does.