Final answer:
The U.S. Green Building Council (USGBC) is responsible for LEED project registration, which is a green building certification program.
Step-by-step explanation:
The organization responsible for LEED project registration is the U.S. Green Building Council (USGBC).
LEED stands for Leadership in Energy and Environmental Design and is a green building certification program that recognizes sustainable building practices.
The USGBC offers different levels of LEED certification, including Certified, Silver, Gold, and Platinum, based on the environmental performance and sustainability of a project.