Final answer:
A corporation is the form of business organization that exists as a legal entity for tax purposes.
Step-by-step explanation:
The correct answer is C) A corporation.
A corporation is a legal entity for tax purposes. Unlike sole proprietorships and partnerships, a corporation is considered separate from its owners, meaning it can be taxed independently. It has its own rights and liabilities, and its owners are not personally responsible for the corporation's debts.