Final answer:
Shareholders of a corporation enjoy limited liability, meaning they are only liable up to their amount of investment and are not personally responsible for the corporation's debts.
Step-by-step explanation:
The category of owners that enjoys limited liability is A. Shareholders (common stock) of a corporation. In a corporation, shareholders' liability is restricted to the amount they have invested, meaning that they are not personally liable for the company's debts beyond their investment. On the other hand, general partners in a limited partnership and sole proprietors face unlimited liability, putting their personal assets at risk to cover business debts. A limited liability company operates differently allowing members to enjoy limited liability much like shareholders in a corporation.