Joint tenancy allows property ownership to be shared under what condition?

Joint tenancy is a specific type of property ownership that includes a critical feature known as the right of survivorship. This means that when one joint tenant dies, their share of the property automatically passes to the surviving joint tenants, rather than going through the probate process. This feature is fundamental to joint tenancy and distinguishes it from other forms of property ownership, such as tenancy in common, where there is no right of survivorship and the deceased's share can be inherited by heirs.

While factors like decision-making and contributions might influence partnerships or agreements in property ownership, they do not define the legal structure of joint tenancy. Joint tenancy specifically requires that the owners hold equal shares in the property with the right of survivorship being a defining characteristic. Additionally, joint tenancy can involve more than just two people; it is not limited to only two persons, as multiple individuals can own property jointly under this arrangement.

Thus, the option that highlights the right of survivorship captures the essence of joint tenancy, making it the correct answer.