The most exotic diamagnetic materials are super conductors. They exhibit perfect diamagnetism and perfect conductivity. The values of magnetic susceptibility ($\chi $) and relative permeability of such materials have values

$\chi = -1, \,\,\,\, \mu_r=0$

The correct answer is option (2) : $\chi = -1, \,\,\,\, \mu_r=0$

Relation between susceptibility $(\chi )$ and relative permeability $(\mu_r)$

$\mu_r=\chi + 1$

If diamagnetic material behave like super conductor $\mu_r=0$

$0=\chi + 1$

$\chi = -1$