Which key benefit is associated with incorporating passive solar design?

Incorporating passive solar design effectively decreases reliance on HVAC systems. This design strategy maximizes natural energy from the sun to regulate indoor temperatures, minimizing the need for artificial heating and cooling. By utilizing design elements like strategically placed windows, thermal mass, and insulation, buildings can maintain comfortable temperatures naturally. This not only leads to significant energy savings but also promotes sustainability by reducing the overall carbon footprint associated with heating and cooling systems.

The other options don't align with the principles of passive solar design. For instance, reducing sunlight exposure does not conform to the idea of using sunlight to one's advantage. Greater dependence on artificial lighting contradicts the goal of maximizing natural daylight, while increased construction time is typically not an inherent aspect of passive solar design; in fact, it often promotes efficiency in the construction process.