The LEED credits given the greatest weights are credits that

The LEED credits given the greatest weights are credits that
A . are used in certifying a LEED Platinum Project
B . contribute to developmental density and Sustainable Sites
C . are included in the LEED for Buildings Operations and Maintenance: Existing Buildings rating system
D . most directly address the most important environmental impacts and human benefits

Answer: D

Explanation:

LEED credits are weighted based on their potential environmental impacts and human benefits. Those that most directly address these areas are given greater weight in the scoring system. This approach is intended to prioritize actions that have the greatest positive impact on critical environmental issues such as climate change, water resources, biodiversity, air pollution, and human health.

Reference: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources