In what situation should a dealership disclose the name and address of a vehicle's previous owner?

Answer: A — Whenever requested by any prospective customer

Providing the name and address of a vehicle's previous owner can be sensitive information and therefore should only be disclosed when necessary. Option B, only disclosing after the sale is completed, may not provide enough time for the prospective customer to make an informed decision. Option C, only for vehicles more than 5 years old, does not take into account any potential concerns or inquiries a customer may have regardless of the age of the vehicle. Option D, disclosing only when the previous owner is a dealership, may exclude important information if the previous owner is an individual and not a dealership. Therefore, option A, disclosing whenever requested by any prospective customer, is the most appropriate and fair decision.