Rubina convinced mariah to start a business with her in a partnership rather than a sole proprietorship. the disadvantage of a sole proprietorship that rubina wants to avoid is

The main disadvantage of a sole proprietorship is that Rubina would have been responsible for all of the debts and liabilities borne by the business. When a partnership is created, the debts become shared by all those who are owners of the business, which can lessen the load on any one person.