What is the minimum piece of information needed to request a replacement document?

The correct choice, which is the vehicle identification number (VIN), is essential for requesting a replacement document because it serves as a unique identifier for the specific vehicle. The VIN is crucial in verifying ownership and ensuring that the correct vehicle records are being accessed. This identifier helps the DMV locate the associated registration and title documents accurately, facilitating the replacement process.

While the driver's license number is also important for identification purposes, it pertains to the individual rather than the vehicle itself. The purchase price of the vehicle and the date of the original transaction do not directly relate to the verification of ownership or the specific request for replacement documents, and therefore are not considered essential pieces of information in this context. By having the VIN, the DMV can provide the needed service effectively and without confusion.