What is the primary role of a Commissioning Authority (CxA)?

The primary role of a Commissioning Authority (CxA) is to oversee the commissioning process and ensure thorough execution. This responsibility encompasses a range of activities, including planning, coordinating, and verifying that all building systems and equipment function as intended according to the specified criteria and performance standards. The CxA acts as an independent entity, ensuring that all stakeholders, including design and construction teams, adhere to the commissioning plan throughout the project lifecycle.

By taking charge of the commissioning process, the CxA aims to enhance building performance, operational efficiency, and occupant satisfaction while minimizing risks associated with system malfunctions or deficiencies. This oversight is critical in achieving optimal system performance and ensuring that the final building meets the owner's requirements and intended use.

Other options, while important aspects of building projects, do not align with the primary function of the CxA. For instance, managing the budget involves financial oversight rather than technical execution; designing building systems pertains more to the engineering team; and providing training for building occupants relates to user engagement rather than the commissioning itself. Therefore, option B correctly identifies the CxA's main responsibility.