Which statement describes the magnetic field within a bar magnet?

Since you did not put the choices of statements, here is what describes magnetic field within a bar magnet:

- from a bar magnet, magnetic field lines are forming closed lines.

- at either pole of the magnet, the magnetic field of a bar magnet is strongest. It is equally compared to the north pole with the south pole

a and b sometimes have a positive value

it is a negative acceleration