What is the process that is performed on existing buildings to identify and recognize system improvements that make the building more suitable for current use?

What is the process that is performed on existing buildings to identify and recognize system improvements that make the building more suitable for current use?
A . Energy modeling
B . Retrocommissioning
C . Life-cycle assessment
D . Fundamental Commissioning (Cx)

Answer: B

Explanation:

Retrocommissioning is a process applied to existing buildings to ensure that they continue to perform optimally for the current use. This process involves checking systems to see if they function as intended, making necessary repairs or improvements, and ensuring that building staff are trained in the operation and maintenance of systems.

Reference: LEED Green Associate Candidate Handbook, U.S. Green Building Council resources