Free USGBC LEED-AP-ID-C Exam Questions

What must a project team inventory to determine if a project has enough reused surfaces to document Materials and Resources Credit, Interior Life-Cycle Impact Reduction, Option 1. Interior Reuse? 

A tenant implements the following strategies to reduce the amount of water used. Which strategy is applicable to the Water Efficiency Credit, Indoor Water Use Reduction for LEED Interior Design and Construction:Commercial Interiors?

In addition to the basic requirements for Energy and Atmosphere, Fundamental Commissioning and Verification, which is required to achieve Energy and Atmosphere, Enhanced Commissioning, Option 1?

Which of the following fixtures requires a WaterSense label (or local equivalent for projects outside the US)?

What should a team focus on first to significantly improve energy performance or achieve the lowest possible operation cost?