Answer
All of the atoms are pointing in the same direction.
Explanation
A magnet is a material that is able to attract some of the metal close to it.
Inside a magnet there are small regions in which the magnetic direction of all the atoms are aligned in the same directions. These regions are known as domains. Within a domain, the alignment of the magnetic direction is the same.
So, all the arrows in the bar magnet are pointing in the same direction to represent that all of the atoms are pointing in the same direction.
