Which is not a type of business organization?

The correct choice is based on the understanding of different types of business organizations. Limited partnerships, corporations, and sole proprietorships are all distinct forms of business structures that define how the business is owned, managed, and taxed.

A limited partnership involves at least one general partner who manages the business and assumes personal liability, while limited partners contribute capital and have liability limited to their investment. A corporation is a legal entity that provides limited liability to its owners, who are known as shareholders, and allows for the transfer of ownership through the buying and selling of stock. A sole proprietorship is the simplest form of business organization, where an individual owns and operates the business with no legal distinction between the owner and the business itself.

In contrast, a stockholder is not a form of business organization but rather a person or entity that owns shares in a corporation. Stockholders benefit from ownership through potential capital gains and dividends but do not constitute a type of business organization. Thus, identifying stockholder as the correct answer highlights the distinction between roles within a business structure and the structures themselves.