Which concept defines ownership between two or more people with a right of survivorship?

The correct concept that defines ownership between two or more people with a right of survivorship is joint tenancy. In joint tenancy, each owner has an equal share in the property, and importantly, if one owner passes away, their interest automatically transfers to the surviving owner(s) rather than passing through a will or estate. This right of survivorship is a key feature that distinguishes joint tenancy from other forms of ownership.

In contrast, tenancy in common does not include the right of survivorship; instead, when one owner dies, their interest in the property is passed on to their heirs rather than the other owners. Tenancy by the entirety is a form of joint ownership available only to married couples that also includes the right of survivorship but is specifically designated for spouses. Estate in severalty refers to ownership by a single individual, completely separate from joint ownership arrangements. Each of these characteristics highlights why joint tenancy is the appropriate answer when considering ownership with a right of survivorship.