ENERGY STAR Portfolio Manager is an online tool developed by the U.S. Environmental Protection Agency (EPA) that allows building owners and managers to measure and track the energy and water performance of their buildings, as well as benchmark their buildings against similar buildings nationwide. The tool uses a 1-
100 ENERGY STAR score to rate the energy efficiency of a building relative to its peers, where a score of 50 represents medianperformance and a score of 75 or higher indicates top performance1 . References: LEED v4 Green Associate Candidate Handbook1, ENERGY STAR Portfolio Manager

Volatile organic compounds (VOCs) are compounds that have a high vapor pressure and low water solubility, and are emitted as gases from certain solids or liquids1. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects2. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors2. VOCs are emitted by a wide array of products, such as paints, solvents, cleaners, fuels, pesticides, building materials, office equipment, etc2. Breathing VOCs can irritate the eyes, nose and throat, can cause difficulty breathing and nausea, and can damage the central nervous system and other organs3. Some VOCs can cause cancer3. Therefore, VOCs negatively impact the quality of indoor air, which is option B.

Submetering systems are devices that measure the water consumption of specific building components, such as cooling towers, irrigation systems, process water systems, or tenant spaces. They allow the facility operator to monitor and optimize the water use of different systems and identify any leaks or inefficiencies12. Submetering systems are also required for some LEED credits, such as Water Metering and Cooling Tower Water Use3.
How LEED Guides Users to Water Efficiency - Facilitiesnet1
Optimize Process Water Use | U.S. Green Building Council2
LEED Certification Tips: Water Efficiency | Buildings4

The U.S. Green Building Council (USGBC) administers the LEED rating systems development. The LEED rating systems are frameworks that provide guidance and criteria for designing, constructing, operating, and maintaining green buildings. The USGBC is responsible for developing, maintaining, and updating the LEED rating systems through a consensus-based process that involves various stakeholders, such as technical experts, industry leaders, government representatives, and public comments. The LEED Green Associate Candidate Handbook states that "USGBC is committed to transforming the way our buildings are designed, constructed and operated through LEED" [1, p. 7]. References: LEED Green Associate Candidate Handbook,
[LEED Rating Systems | U.S. Green Building Council]

According to the LeadingGreen Guide:
"Individual controls for lighting have a significant effect on occupants' comfort. Meeting the unique needs of each occupant can be accomplished through effective design of lighting controls..." LEED credits under EQc6 emphasize providing lighting comfort and energy savings through such controls.