An adult and a minor have entered into a written contract for the sale of a property the minor has inherited. This agreement is

A void contract is one that is unenforceable from the moment it is created, typically because it lacks essential elements such as legality or capacity. In this case, the contract is not void since it can be enforced unless the minor chooses to void it, making it voidable instead.

A binding contract is one that is enforceable by law against both parties. However, since one party is a minor, the contract does not hold the same binding effect on them, as they have the legal right to cancel it, which disqualifies it from being fully binding.

An illegal contract involves agreements that violate laws or public policy. The sale of property by a minor does not inherently constitute illegality; rather, it is the minor's capacity to enter into a contract that is in question. Hence, this option does not apply.