Final answer:
LEED stands for Leadership in Energy and Environmental Design. It is a rating system used to evaluate the environmental performance of buildings and encourage sustainable design practices. The U.S. Green Building Council started it in 1993.
Step-by-step explanation:
LEED stands for Leadership in Energy and Environmental Design. It is a globally recognized rating system used to evaluate the environmental performance of buildings and encourage sustainable design and construction practices. LEED measures various aspects of a building's performance, such as energy efficiency, water usage, and materials selection. It was started by the U.S. Green Building Council (USGBC) in 1993, a non-profit organization that promotes sustainability in the building industry.