Describe the concept of "sustainable sites" as it relates to LEED.

The concept of "sustainable sites" in the context of LEED revolves around minimizing the environmental impact of site development. This includes considerations such as preserving existing ecosystems, managing stormwater responsibly, using sustainable landscaping practices, minimizing heat islands, and promoting transportation alternatives. Sustainable site practices aim to enhance the ecological performance of a property while also providing health benefits to occupants and the surrounding community.

Option B correctly encapsulates this intent by highlighting the focus on reducing environmental impacts associated with the development and management of a site. This approach is essential in LEED because it aligns with the overall goal of promoting sustainable construction practices that benefit the planet, rather than contributing to environmental degradation.

In contrast, transforming urban areas into green spaces might be an aspect of sustainable site development, but it does not capture the full scope of reducing environmental impacts. Building skyscrapers to utilize vertical space focuses more on addressing space efficiency rather than sustainability in site practices. Promoting fossil fuels runs counter to the principles of sustainability that LEED advocates, as it does not support environmentally friendly practices. Thus, the emphasis on minimizing environmental impacts in site development is a fundamental aspect of what constitutes sustainable sites in LEED.