The statement that is the U.S. Green Building Council (USGBC) vision is: Buildings and communities will regenerate and sustain the health and vitality of all life within a generation. USGBC is a non-profit organization that promotes sustainability in the building industry through its LEED rating system, education programs, advocacy initiatives, and research projects. USGBC's vision reflects its commitment to transforming the built environment into one that supports human health, environmental quality, social equity, and economic prosperity1 . References: LEED v4 Green Associate Candidate Handbook1, USGBC's Vision

The Sustainable Sites (SS) category addresses the site selection, design, construction, and operation of a project, as well as its impacts on the natural and built environment. One of the goals of this category is to reduce light pollution and discourage the development of previously undeveloped land. Light pollution is the excessive or inappropriate use of artificial lighting that can have adverse effects on human health, wildlife, ecosystems, and astronomy. Previously undeveloped land is land that has not been graded, cleared, or built upon prior to the current project and remains in a natural state. Developingpreviouslyundeveloped land can result in habitat loss, soil erosion, stormwater runoff, and increased infrastructure costs13. References: LEED v4 Green Associate Candidate Handbook1, LEED v4 BD+C Reference Guide3

ASHRAE 90.1-2010, Appendix G is the referenced standard for defining the baseline building performance for energy simulation modeling in LEED v4 for Building Design and Construction. The baseline building is a hypothetical building that represents the minimum energy performance required by ASHRAE 90.1-2010, which is a standard for energy efficiency in buildings. The baseline building is used as a benchmark to compare the proposed design of the project and to calculate the percentage of energy cost savings achieved by the project. The baseline building performance is evaluated by following the procedures and assumptions specified in Appendix G of ASHRAE 90.1-2010, such as building envelope, lighting, HVAC systems, service water heating, and renewable energy.
The other options are not relevant to the question, as they are standards for different aspects of green building, such as thermal comfort (ASHRAE 55-2010), air filtration (ASHRAE 52.2-2007), and ventilation (ASHRAE
62.1-2010).
References: LEED v4 Reference Guide for Building Design and Construction, p. 341 1; [ASHRAE website]

Building-level energy metering is a prerequisite in LEED that requires the installation of energy meters to track the total energy usage of a building12. It helps to monitor and optimize the energy performance of the building and to report the data to USGBC3. Green metering, site evaluation data, and energy savings records are not terms used in LEED.

A brownfield is a property that has been previously used for industrial or commercial purposes and may be contaminated by hazardous substances, pollutants, or contaminants12. Brownfields can pose environmental and health risks and require remediation before redevelopment3. Examples of brownfields include abandoned factories, gas stations, dry cleaners, etc