Which of the following actions should a project team take to make sure a building remains efficient during its operation?

Ensuring that the building systems are functioning as designed is critical for maintaining operational efficiency. This includes monitoring and maintaining HVAC systems, plumbing, electrical systems, and other mechanical systems to ensure they perform at their optimal levels. When these systems are regularly checked, serviced, and calibrated, the building can operate more efficiently, resulting in less energy consumption and improved overall performance.

Operational efficiency is heavily dependent on systems that are well-maintained, as even minor issues can lead to increased energy use, higher utility costs, and decreased comfort for occupants. Therefore, routine inspections and proactive maintenance are key strategies in achieving long-term sustainability and efficiency in building operation.

While changing exterior materials, implementing landscaping, or focusing on aesthetics can have benefits, they do not directly contribute to the operational efficiency of the building systems, which is the primary concern in this context.