Final answer:
The answer provides potential types of information about a mobile unit that might be required for regulatory compliance, without specifying due to lacking context.
Step-by-step explanation:
The question pertains to what information concerning the mobile unit must be made available to an authorized representative of the board upon request. This typically involves regulatory compliance within certain professional fields such as healthcare or telecommunications. However, without further context, it is difficult to provide a specific list of information that should be made available. Generally, it could include permits, licenses, inspection records, staff qualifications, equipment maintenance records, and user logs. This information helps in ensuring that the mobile unit operates within the guidelines and standards set by the governing board or authority.