Choice "C" is correct. If a person is defrauded into entering into a contract because its terms or the surrounding circumstances are not as represented (that is, fraud in the inducement), the contract is merely voidable.Choice "d" is incorrect. Fraud in the execution (that is, the party did not know that he was signing a contract) renders a contract void.Choice "a" is incorrect. Physical coercion (or the threat of physical coercion) is a type of duress that renders a contract void rather than voidable.Choice "b" is incorrect. Entering into a contract with a person who is without capacity and has a guardian appointed (that is, after a court has declared the person incompetent) renders the contract void.