A yellow star travels through the grid like a snake: along the top row to the right, back along the middle row to the left, then along the bottom row. It jumps the same number of cells each time. Where is it next?

Along the snake path the cells are numbered top row left to right, middle row right to left, bottom row left to right. The star jumps two cells each time: top-left, top-right, centre, bottom-left. Two more cells along the bottom row brings it to the bottom-right corner: (c). (a) moves only one cell, and (b) and (d) do not follow the snake path.