Explanation:

- Void: A contract that is void lacks any legal effect from the outset. Agreements with uncertainty fall into this category because they lack definite terms, making it impossible to enforce them. Correct Answer

- Voidable: This type of contract is valid until someone takes action to void it. It involves defects that allow one party to cancel.

- Unenforceable: Such contracts are valid but cannot be enforced in court due to technical issues, like missing a written form.

- Illegal: An illegal contract involves activities that are against the law, rendering it automatically void.

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