Which of the following is a leasehold estate of indefinite duration

A tenancy in common refers to a form of ownership rather than a leasehold estate. It involves multiple owners who hold shares in a property without rights of survivorship, meaning each owner can sell or transfer their interest independently. The duration of ownership is not indefinite in the same way leasehold estates are, as it can be terminated by sale or transfer.

Joint tenancy with right of survivorship is also a form of property ownership, not a leasehold estate. In this arrangement, co-owners have equal shares and if one owner dies, their share automatically passes to the surviving owners. This ownership structure does not provide for an indefinite term of occupancy, as it is contingent on the life of the owners.

A tenancy in the entirety is a special form of joint ownership available only to married couples, providing rights of survivorship. Like the previous options, it is about ownership rather than a leasehold estate. This arrangement does not imply indefinite duration as it can end upon divorce or death of one spouse.