Final answer:
An inspector must adhere to a set timeframe to respond to TREC for a hearing, adhering to the rules and maintaining industry integrity.
Step-by-step explanation:
An inspector has a specific timeframe to respond to the Texas Real Estate Commission (TREC) when called upon to be a witness at a TREC hearing. The rules surrounding these procedures are established by TREC and are part of the regulatory framework that governs real estate practices in Texas. Inspectors, as licensed professionals, are required to comply with these rules and participate in hearings when necessary to maintain the integrity of the real estate industry.