Explanation:

- Promissory Note Basics:

- A promissory note is a financial instrument where a party promises to pay a specific amount to another party.

- Parties Involved:

- Maker: The person or entity who makes the promise to pay.

- Payee: The person or entity to whom the payment is promised.

- Option 1 (2 Parties):

- Correct Answer: A promissory note involves two parties. These are the maker and the payee.

- Incorrect Options Explanation:

- Option 2 (4 Parties): Not applicable for a simple promissory note.

- Option 3 (6 Parties): Incorrect; too many parties for a standard note.

- Option 4 (3 Parties): Not typical for a promissory note.