Final answer:
Temporary regulations in law must be followed by taxpayers until they are superseded or until they expire.
Step-by-step explanation:
Temporary regulations in law must be followed by taxpayers until they are superseded or until they expire. These regulations serve as temporary guidelines or rules that taxpayers need to adhere to until permanent regulations are put in place. For example, in the context of tax laws, temporary regulations may include provisions for certain deductions or exemptions that are in effect for a limited period of time.