The major advantage of ownership in severalty is:

This option is incorrect because ownership in severalty implies that the individual bears all the risks associated with the property alone. Unlike co-ownership situations where risks can be distributed among multiple owners, a sole owner must manage and absorb any financial or legal liabilities entirely on their own.

Joint decision making is not applicable to ownership in severalty, as this type of ownership grants sole authority to the individual owner. In contrast, joint ownership arrangements require collaboration and consensus among multiple owners, which can complicate the decision-making process and slow down actions regarding the property.

While ownership in severalty does involve certain risks, stating that "the risks are high" does not highlight an advantage. Instead, it reflects a potential disadvantage of having sole responsibility for the property. The risks can vary based on various factors, but they do not constitute a benefit of ownership in severalty.