What is the change of one of the parties to a contract at the mutual agreement of the original parties?

When an individual enters into a usurious agreement, the defense to enforcement would be

Which of the following terms means an agreement to an offer resulting in a contract?

A contract that must be in special form or produced in a certain way, such as under seal.

Law requiring certain contracts must be in writing.

This necessity means that the parties desiring to enter into contracts meet all requirements.

A contract in which the parties express their intentions, either orally or in writing, at the time of the agreement.

The terms of this contract are implied by acts or conduct of the parties.

Those contracts in which the parties have fulfilled the terms.

This is an agreement which is not in the form required by law.