Final answer:
This sounds like a sole proprietorship. A sole proprietorship is the simplest form of business structure where an individual owns and operates the business.
Step-by-step explanation:
This sounds like a sole proprietorship.
A sole proprietorship is the simplest form of business structure where an individual owns and operates the business. In this case, Ellen can easily close her catering business and return to school because she is the sole owner of the business.
Other types of business structures include partnerships, corporations, and limited liability companies (LLCs), which may have multiple owners and more complex legal and financial responsibilities.