The correct answer is C because the baseline water usage is 150% of the water use for a building with a certificate of occupancy dated 1993 or later, as stated in the LEED v4.1 O+M Reference Guide1.The baseline water usage is determined by calculating the estimated usage assuming Energy Policy Act-compliant fixtures2.
The other options are incorrect because they either have the wrong percentage or the wrong year for the baseline water usage.
References: =
* LEED v4.1 O+M Reference Guide, page 97
* Guide to the LEED AP Operations and Maintenance (O+M) Exam, page 77
* LEED v4 AP O+M Mock Exam, page 90 =========================================