The answer is "C. A sole proprietorship".
The sole proprietorship is the easiest business form under which one can work a business. The sole proprietorship is certifiably not a lawful element. It basically alludes to an individual who claims the business and is by and by in charge of its obligations.
A sole proprietorship can work under the name of its proprietor or it can work together under an invented name, for example, Nancy's Nail Salon. The invented name is essentially an exchange name- - it doesn't make a lawful substance separate from the sole proprietor