What is defined as a magnet?

A magnet is defined as a material that has the ability to attract iron and other ferromagnetic materials. This intrinsic property arises from the alignment of magnetic domains within the material, allowing it to exert a magnetic force. The attraction of iron is a key characteristic of magnets, which distinguishes them from non-magnetic materials.

Options that refer to repelling iron or lacking magnetic properties do not align with the core definition of what constitutes a magnet. Additionally, while synthetic objects can be designed to create a magnetic field, this definition is more broad and does not capture the fundamental characteristic of traditional magnets that specifically attract iron. Thus, the most accurate definition of a magnet is indeed a material having the property of attracting iron.