The correct option is D [Kr]4d105s0
Palladium is a transition element. It is in 4d series and 10th group. Atomic number of palladium is 46.
General electronic configuration of 4d series is [Kr]4d(1−10)5s(1−2)
Atomic number of Kr is 36.
Thus, electronic configuration of palladium is [Kr]4d105s0
Note: Single element in d-block which has zero electrons in s-subshell.