Final answer:
The proper description of the property is the least necessary for a valid deed.
Step-by-step explanation:
The proper description of the property would be the least necessary for a valid deed.
While all of the options A) Acknowledgment, B) Delivery, C) Proper description of the property, and D) A grantee who is sufficiently identified, though not named in the deed contribute to a valid deed, the proper description of the property is vital as it accurately identifies the property being transferred. Without a proper description, the deed may be considered incomplete or ambiguous.
For example, if the deed does not clearly define the boundaries, measurement, or specific location of the property, it could lead to disputes or confusion in the future.