Which of the following is NOT considered a requirement for the validity of a contract?

A valid contract typically requires several essential elements: capacity of the parties, legality of the purpose, and consideration.

The capacity of parties means that all parties involved in the contract must have the legal ability to enter into an agreement. This usually involves being of legal age and sound mind.

Legality of purpose indicates that the contract must be for a lawful objective, as agreements for illegal activities cannot be enforced.

Consideration refers to something of value exchanged between the parties, which is necessary for the formation of a contract; it is what each party agrees to give or do for the other.

While many contracts are indeed written to provide clarity and a formal record, not all contracts are required to be in written form to be valid. Oral contracts can also be legally binding in many situations, depending on the circumstances and the nature of the agreement. Therefore, the requirement for a written form is not considered essential for a contract's validity in all cases.