Where can mDL be utilized for TSA PreCheck?

The correct answer identifies Salt Lake International Airport as a location where the mobile driver's license (mDL) can be utilized for TSA PreCheck. This is significant because Salt Lake International Airport is among the locations that have adopted the technology necessary to scan and verify mDLs. This capability enhances the efficiency of the security process for travelers who use TSA PreCheck, allowing for faster identification without needing to present a physical license.

In contrast, the other options do not represent suitable environments for the acceptance of mDLs specifically for TSA PreCheck. While some airports may be able to accept mDLs eventually, as of now, Salt Lake International Airport is a notable example of where this technology is actively in use. Additionally, bus stations and local DMV offices do not fall within the context of TSA screening processes where mDLs and their specific utilization for travel identification are relevant.