Final answer:
Mandatory agency disclosure laws in real estate transactions include dual agency disclosure. Therefore, the answer to the question is option 3: Dual agency disclosure.
Step-by-step explanation:
Every state has mandatory agency disclosure laws that require certain information to be disclosed in real estate transactions. These laws aim to promote transparency and protect the interests of both buyers and sellers.
Dual agency disclosure is one of the options under these laws. It means that if a real estate agent represents both the buyer and the seller in a transaction, they must disclose this dual agency relationship to both parties. This ensures that both parties are aware of the potential conflict of interest and can make informed decisions.
Therefore, the answer to the question is option 3: Dual agency disclosure.