Explanation
Sustainable landscape design aims to create landscapes that are in harmony with the local environment, conserve natural resources, and provide ecological benefits. One of the outcomes of sustainable landscape design is restoring and regenerating habitat for native plants and animals, which enhances biodiversity and ecosystem services.
References:
LEED v4 for Building Design and Construction, p. 582
LEED Green Associate Candidate Handbook, p. 11

Chlorofluorocarbons (CFCs) are the class of refrigerants that contribute the most to ozone depletion potential (ODP). Ozone depletion potential is a measure of how much a substance can damage the ozone layer in the stratosphere, which protects life on Earth from harmful ultraviolet radiation. CFCs are synthetic chemicals that contain chlorine, fluorine, and carbon atoms. They were widely used as refrigerants, aerosol propellants, solvents, and foam blowing agents until they were phased out by the Montreal Protocol due to their high ODP. The LEED Green Associate Candidate Handbook states that one of the strategies for achieving energy and atmosphere efficiency is to "eliminate chlorofluorocarbons (CFCs) in new building HVAC&R systems"
[1, p. 15]. References: LEED Green Associate Candidate Handbook, [Ozone Depletion Potential | U.S.
Environmental Protection Agency]

The Promote Sustainable and Regenerative Material Resource Cycles impact category in LEED encourages the use of materials that can be continually cycled back into the same system at their end-of-life. This is referred to as moving to cyclical, non-depleting material cycles. It promotes the use of renewable or recyclable materials and reduces waste. References: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources

A plug load, also called a receptacle load, is the electrical current drawn by equipment connected to the electrical system through wall outlets. Examples include computers, monitors, printers, small appliances, chargers, and other office equipment. In LEED Energy and Atmosphere, plug loads matter because they contribute to total building energy use and can significantly affect energy performance.
Option A is too broad and unclear because regulated building systems and receptacle equipment are not the same thing. Option B is incorrect because standby battery connection is not what defines a plug load. Option C describes a non-regulated load generally, but it does not give the correct LEED definition. Managing plug loads through ENERGY STAR equipment, controls, occupant education, and scheduling can reduce energy demand.

One type of construction pollution that can be reduced by prevention activities is airborne dust generation. Airborne dust can be generated by various construction activities, such as excavation, demolition, grading, hauling, and vehicle traffic. Airborne dust can have negative impacts on the air quality, human health, and climate. Airborne dust can contribute to respiratory problems, allergies, asthma, and eye irritation for workers and nearby residents. Airborne dust can also reduce the visibility, increase the risk of accidents, and damage the equipment and materials. Airborne dust can also affect the climate by absorbing or reflecting solar radiation, altering the cloud formation and precipitation patterns, and influencing the carbon cycle1.
Some of the prevention activities that can reduce airborne dust generation during construction are12:
Covering or wetting the exposed soil and stockpiles
Using water sprays or misters to suppress the dust
Installing wind fences or barriers around the site
Applying mulch, straw, or vegetation to stabilize the soil
Sweeping or vacuuming the paved areas and roads
Limiting the speed and frequency of vehicles
Using low-emission or electric vehicles and equipment
Implementing a dust control plan and monitoring the dust levels