Which of the following projects receives a credit for adopting minimum indoor air quality performance?

The selection of "All project types" as the correct answer underscores the inclusive nature of the Indoor Air Quality (IAQ) credits within the LEED BD+C v4 framework. This framework recognizes that maintaining appropriate indoor air quality is crucial across all building types, whether they are commercial, residential, institutional, or industrial.

Every project type benefits from ensuring that the indoor environment is free from excessive pollutants and provides adequate ventilation, which is essential for the health and comfort of occupants. By adopting minimum IAQ performance standards, projects can qualify for this credit, enhancing the overall livability and sustainability of the space.

While other options suggest limitations to specific types of projects, the LEED framework is designed to promote a broad application of IAQ standards to ensure that all building occupants, regardless of the project type, have access to a healthy and safe indoor environment. This comprehensive approach supports the LEED goal of improving public health and high-performance building design.