Final answer:
An estate with a complete bundle of rights and unlimited duration of tenancy is known as a c) fee simple estate. It represents the most complete form of property ownership, giving the owner full rights to the land.
Step-by-step explanation:
If an estate includes the complete bundle of rights and unlimited duration of tenancy, it is a fee-simple estate. This type of ownership is the most complete form of property ownership under the law, where the owner has an absolute title to the land. The owner is free to dispose of the land and the rights attached to it as they please, without any terms or restraints. In contrast, a life estate is limited to the lifetime of an individual, a determinable estate can be voided upon the occurrence of a certain event, and a legal life estate is typically created by law rather than by the owner of the property.