The correct option is D Paramagnetic and Diamagnetic
As we move from the first to the second transition series, crystal field splitting increases for a given ligand. Thus, [PdCl4]2− is a sqare planner complex and [NiCl4]2− is a tetrahedral complex. Hence, [NiCl4]2− is paramagnetic and a high spin complex whereas [PdCl4]2− is diamagnetic and a low spin complex.