Answer: (C) Withholding information
Step-by-step explanation:
The withholding information is one of the type of holding information in which we easily hold the various types of data or information deliberately in order to showing more power as compared to others.
According to the question, the agent of the real estate are withholding the data or information from the buyers and the various types of new regulations are addressing to the specific withholding information ethical problem in the market.
Therefore, Option (C) is correct.