Implementing passive design strategies should be the primary focus as they utilize the climate to maintain a comfortable temperature range in the building, reducing the reliance on mechanical heating and cooling systems. This approach can significantly improve energy performance and reduce operational costs by maximizing natural heating, cooling, and daylighting before considering mechanical or electrical systems.
References: The LEED v4 Reference Guide for Interior Design and Construction emphasizes the importance of passive design strategies within the integrative process for optimizing energy performance1. Additionally, the LEED v4 energy update reflects a focus on increased energy efficiency and greenhouse gas emissions reductions, which can be effectively addressed through passive design23.

Within the context of the Water Efficiency Credit for Indoor Water Use Reduction in LEED, a private lavatory faucet refers to a sink that serves a non-public, individual space. This typically includes faucets in bathrooms that are designated for use by a single person or a specific occupant and are not accessible to the general public or shared among multiple users. A sink in a private office bathroom fits this definition as it is intended for the exclusive use of the occupant of the private office. In contrast, sinks in shared office restrooms, employee restrooms in retail stores, or even in private hotel room bathrooms are accessible to a broader group of users and do not meet the criterion of being a "private lavatory faucet" for the purpose of this credit.References:
* LEED v4 for Interior Design and Construction Reference Guide, particularly the section on Water Efficiency Credit, Indoor Water Use Reduction, which details the fixture types and their classifications.

For a project to achieve the Indoor Environmental Quality Credit for Low Emitting Materials, it must ensure that all materials meet the current standards. If the certifications are outdated, the LEED AP should obtain current certifications for the wall and ceiling paints to demonstrate compliance with the latest requirements. This is essential to verify that the materials used are indeed low-emitting according to the most recent standards and to maintain the integrity of the certification process123.
References:
* U.S. Green Building Council. "LEED v4: Interior Design + Construction Guide."Retrieved from USGBC Guide.
* U.S. Green Building Council. "Low-Emitting Materials." Retrieved from USGBC Credits.
* Green Badger. "LEED v4.1 Low Emitting Materials."Retrieved from Green Badger.

The LEED v4 criteria for the Energy and Atmosphere Credit, Advanced Energy Metering, Option 2 requires advanced energy metering for all whole-building energy sources as well as for any individual energy end uses that account for 10% or more of the total annual consumption of the building. From the provided energy end-use consumption data, it is clear that space cooling, interior fans, and receptacles each represent more than
10% of the total energy consumption. Additionally, interior lighting and space heating together also account for a significant portion of the energy consumption. Hence, to meet the creditrequirements, advanced metering must be installed for all these categories, aligning with option C.
References:Guidance from the LEED study guide explaining the requirements for advanced energy metering under the Energy and Atmosphere Credit, particularly for end uses that comprise 10% or more of total consumption .