Final answer:
The statement 'Law of gravity' belongs to a scientific law category.
Step-by-step explanation:
A scientific law is a description of a pattern in nature that is true in all circumstances that have been studied. Laws are concise and often expressed in the form of a single sentence or mathematical equation. The law of gravity, which states that all matter attracts all other matter, is an example of a scientific law.
In the given statements, the law of gravity belongs to a scientific law category.