The correct answer is A. stock.
Stock is a type of security that represents a share of ownership in a company. When you buy stock, you become a part-owner of the company. The value of your stock will go up and down depending on the performance of the company.
A loan is a type of debt that is borrowed from a lender. The borrower agrees to repay the loan with interest over a set period of time.
Debt is a general term for any type of financial obligation. It can include loans, bonds, and other types of securities.
Debentures are a type of debt security that is issued by a company. Debentures are typically secured by the company’s assets, which means that the company must use its assets to repay the debt if it defaults.
In conclusion, the correct answer to the question “Ownership securities are represented by _” is A. stock.