Which of the following would be considered a contract without lawful purpose?

A contract without lawful purpose is defined as an agreement that involves illegal activities or objectives that are against public policy. Hiring a hitman to commit a crime embodies this concept clearly, as it involves an agreement to carry out a criminal act—murder—which is illegal and harmful to society. In essence, such a contract cannot be enforced in a court of law because it is predicated on unlawful intentions.

In contrast, the other options represent agreements that are lawful and operate within the legal framework. An employee signing a work contract, buying a used car, and renting an apartment are all legitimate transactions that serve lawful purposes. They are typical examples of everyday activities that individuals engage in, fully supported by legal standards and societal norms. Therefore, they do not meet the criteria for being considered contracts without lawful purpose.