On these dials the orange hand and the dark hand each turn at a steady rate. One dial does not follow the pattern. Which dial is it?

The orange hand turns $90^{\circ }$ clockwise each time (up, right, down, left, up) and the dark hand turns $45^{\circ }$ anticlockwise (right, upper-right, up, upper-left, left). On dial (d) the dark hand still points up instead of upper-left, so (d) is wrong.