Final answer:
The ability of a listing salesperson to disclose offer details in a multiple offer situation depends on local real estate laws, brokerage policies, and seller's instructions, with confidentiality being a key concern.
Step-by-step explanation:
Whether a listing salesperson can disclose the substance of offers to all potential buyers in a multiple offer situation depends on the laws and regulations that govern real estate practices in the specific jurisdiction, as well as the policy of the listing agent's brokerage and the seller's instructions. Generally, in many places, it is not permissible for a salesperson to disclose the details of an offer without expressed permission from the seller as doing so could violate confidentiality obligations. It is always important for real estate professionals to adhere to the ethical codes and legal requirements set forth by their licensing authorities, which often prioritize the protection of client interests and fair dealing.