Final answer:
A valid contract may be unenforceable for reasons including lack of consideration, misrepresentation, and undue influence.
Step-by-step explanation:
A valid contract may be unenforceable for various reasons, including:
- Lack of consideration: Consideration refers to something of value that is exchanged between the parties to a contract. If one party fails to provide consideration, the contract may be unenforceable.
- Misrepresentation: If one party makes a false statement or fails to disclose material information, it can render the contract unenforceable.
- Undue influence: If one party exerts undue pressure or influence on another party to enter into a contract, it can make the contract unenforceable.
Hence, the correct answer is D. All of the above.