What are slide-outs in an RV used for?

Slide-outs in an RV are designed to expand the living space when the vehicle is parked. These mechanisms allow sections of the RV's interior to extend out, creating more room for movement and additional furnishings when the RV is set up at a campsite or parking area. This feature significantly enhances comfort and usability, making the RV feel more spacious and accommodating for occupants.

The other choices do not accurately reflect the purpose of slide-outs. Increasing towing capacity is primarily related to the design and weight management of the RV itself, not its expandable features. Minimizing storage space contradicts the function of slide-outs, as they actually create more space for occupants and belongings. Enhancing fuel efficiency is also not related, as slide-outs do not affect the vehicle's aerodynamics or engine performance in a way that would improve fuel consumption. Overall, the primary function of slide-outs is to facilitate a larger and more flexible living environment within the RV when it is stationary.