A contract is voidable if entered into under duress (improper threats) or undue influence (overmastering persuasion in a confidential relationship), impairing the party’s free will.

• A. A contract is voidable if entered into under duress (improper threats) or undue influence (overmastering persuasion in a confidential relationship).
• B. A contract is voidable if entered into under duress or undue influence, impairing free will.
• C. Duress or undue influence always renders contracts unenforceable.
• D. Only physical threats qualify as duress; financial pressure does not.

Answer: (C)