In which of the following orbitals, there is non-zero probability of finding the electron in the xy plane?

Electrons can be found in the ${\mathrm{d}}_{\mathrm{xy}}$ orbital. Here, the nodal planes are ${\mathrm{d}}_{\mathrm{xz}}$ and ${\mathrm{d}}_{\mathrm{yz}}$. In other words, there are no electrons in $p_x$ and ${\mathrm{d}}_{{\mathrm{x}}^2}$ (nodal plane).