That is an example of a Law. Specifically, that is called as Law of Magnetism. It is one of the physical laws or scientific laws we have. A physical law is a theoretical statement is the conclusions of repeated scientific observations and experiments over the year.
Answer: law
Explanation:
A scientific law can be define as the statement which consists of a cause of the natural phenomena. This is based upon evidences obtain from the repeated experimental trials. The facts and content of the scientific law cannot be changed.
The given statement is the example of law of magnetism. According to this law, when the two magnets are kept together, the like poles repel each other and unlike pole attract each other.
