What is the nature of the magnetic susceptibility of a diamagnetic substance?

The most appropriate magnetization $M$ versus magnetising field $H$ curve for a paramagnetic substance is

An example of a perfect diamagnet is a superconductor. This implies that when a superconductor is placed in an external magnetic field of intensity $B$,the magnetic field $B_s$ inside the superconductor will be such that

Paramagnetic substances:

If a diamagnetic solution is poured into a $U-$ tube and one arm of this $U-$ tube is placed between the poles of a strong magnet with the meniscus in line with the field,then the level of the solution will:

The universal property of all substances is