Answer: duress
Explanation: The legal defense available in this situation is duress. Duress is defined legally as a restraint in which a person is influenced, whether by lawful or unlawful forceful compulsion of their liberty by monition or implementation of physical enforcement; legally for the incurring of civil liability, of a citizen's arrest, or of subrogation, or illegally for the committing of an offense, of forcing a contract, or of using threats. Genuineness of assent is not achieved when parties are forced to agree to something under threat of harm.