A foreign corporation can conduct commerce in a state if it obtains a certificate of authority from the state.（) 2022-07-09 A contract requires an offer and an acceptance.（) 2022-07-09 Agency law is a mixture of tort law and contract law.（) 2022-07-09 A negotiable instrument must be in writing in order to be considered valid.（) 2022-07-09 Unsecured credits require collateral to protect the payment of the debt.（) 2022-07-09 A ratified contract can be disaffirmed even after the minor reaches the age of majority.（) 2022-07-09 Contracts falling under past consideration are unenforceable.（) 2022-07-09 In a deed of trust, the creditor is the beneficiary.（) 2022-07-09 The Clayton Act, enacted in 1914, regulates mergers and prohibits certain exclusive dealing arrangements.（) 2022-07-09 A person who has alternating periods of sanity and insanity can enter into contracts （). 2022-07-09