Explanation:

- Valid contract (Option 1): A legal agreement that is enforceable by law. It involves parties who have the capacity and intention to enter into an agreement.

- Void contract (Option 2): ? A contract that is not legally enforceable from the beginning. Contracts with minors are typically void as minors lack the capacity to contract.

- Voidable contract (Option 3): A contract that is valid but can be canceled by one party due to lack of capacity, duress, or misrepresentation.

- Voidable contract at the option of either party (Option 4): A contract that can be canceled by either party involved, not typically applicable to minors.

Correct Answer: Option 2 - Void contract