What must be considered for a contract to have a legal object?

For a contract to have a legal object, it is essential that it fulfills a legal purpose. This means that the subject matter of the contract must be lawful and not violate any statutes, regulations, or public policy. A contract that involves illegal activities, such as drugs, human trafficking, or any other unlawful endeavors, is void and cannot be enforced in a court of law. Thus, a legal object ensures that the contract aligns with the legal framework and moral standards of society.

While the other options seem relevant, they do not directly relate to the fundamental requirement of a legal object. Ethical marketing practices and economic benefit can be important in specific contexts but do not determine whether the contract itself has a legal object. Similarly, a pre-established duration may be a valid term within contractual agreements but does not impact the legality of the contract’s purpose. Therefore, fulfilling a legal purpose is the crucial aspect that allows a contract to be recognized and enforceable by law.