There are 4 shapes on a 4x4 grid. Which shape is closest to the red square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: red square at (2, 0)
Distance from target shape to cyan square at (2, 3): 3
Distance from target shape to purple trapezoid at (1, 3): 4
Distance from target shape to orange trapezoid at (0, 2): 4
Closest shape is the cyan square at (2, 3) with distance 3</think>

<answer>(2, 3)</answer>