Final answer:
The source of corporate financing that is not considered debt financing is b. Common Stock. Common Stock indicates equity financing, where the company sells ownership stakes, unlike the other options which involve borrowing funds.
Step-by-step explanation:
When firms need to raise financial capital, they have a variety of options. One common method is debt financing, where the firm borrows money and commits to paying it back with interest. The sources of debt financing include borrowing from a bank (Note Payable), issuing bonds (Bonds Payable), or entering into lease agreements (Leases).
Each of these involves a legal promise to repay the borrowed funds. Another option for a firm to raise capital is through equity financing, which involves selling ownership stakes in the company, typically through Common Stock. This option differs from debt financing as it does not involve borrowing money, but rather selling a portion of ownership in the company to investors.
Between the options provided, the one that is not a source of corporate debt financing is b. Common Stock. Common Stock represents equity financing, not debt financing, as it involves the sale of company shares rather than borrowing money.