What is the minimum safe altitude (MSA) for the VOR/DME or GPS-A at 7D3 centered on?

The minimum safe altitude (MSA) for the VOR/DME or GPS-A at 7D3 is centered on the White Cloud VOR/DME. This is correct because the MSA is calculated based on the navigational aid that provides the best reference for approaching a specific airport, which in this case is the White Cloud VOR/DME. The MSA typically ensures safe terrain clearance and is derived from the data surrounding the VOR/DME or other navigational aids in the area.

In this context, the MSA is designed to provide a buffer above the highest terrain in that vicinity while allowing pilots to maintain safe operations when flying IFR (Instrument Flight Rules). Thus, aligning the MSA with the White Cloud VOR/DME helps pilots effectively navigate and arrive safely at 7D3, utilizing the most relevant and reliable reference point for radar and radio navigation.