Final answer:
The General Warranty Deed provides the most legal promises to the buyer, guaranteeing a clear title, no hidden encumbrances, and the right to sell, as well as promising title defence against claims.
Step-by-step explanation:
The deed that offers the most legal promises to a purchaser is known as a General Warranty Deed. This type of deed provides the highest level of protection for the buyer and includes several critical covenants or guarantees by the seller. The seller promises that they hold a clear title to the property, that there are no undisclosed encumbrances, and that they have the right to sell the property. The seller also guarantees that they will defend the title against any claims. This form of deed is contrasted with other types, such as a Special Warranty Deed, which only warrants against issues that arose during the period the grantor held the title, and a Quitclaim Deed, which makes no guarantees about the title and merely transfers whatever interest the grantor has, if any.