Which of the following elements is NOT required for a contract to be legally binding?

In the context of contract law, a legally binding contract typically requires several essential elements to be valid, namely offer, acceptance, and capacity. Written documentation, while often advantageous and sometimes required for certain types of contracts (such as real estate transactions), is not universally necessary for a contract to be legally binding.

Oral contracts, for instance, can be completely valid and enforceable unless specific laws dictate that certain agreements must be in writing. Thus, while having a written record of a contract can provide clarity and serve as proof in disputes, it is not an essential element. The primary elements of offer, acceptance, and capacity are what truly establish a binding agreement, making written documentation the element that can be omitted in many scenarios.