Final answer:
The grantor's promise inherent in a warranty deed is that the grantee will receive full ownership of the property. A warranty deed guarantees clear and marketable title to the property, protecting the grantee from any future disputes or challenges.
Step-by-step explanation:
The grantor's promise inherent in a warranty deed is that the grantee will receive full ownership of the property. The primary purpose of a warranty deed is to guarantee that the grantee is obtaining clear and marketable title to the property, meaning that the grantor is asserting ownership and promising that there are no other claims or encumbrances on the property that would affect the grantee's ownership rights. This protects the grantee from any future legal disputes or challenges to their ownership.