There are 4 shapes on a 10x10 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 (7, 5)
Distance from target shape to orange rectangle at (8, 0): 6
Distance from target shape to brown right_triangle at (0, 1): 11
Distance from target shape to pink rectangle at (0, 2): 10
Closest shape is the orange rectangle at (8, 0) with distance 6</think>

<answer>(8, 0)</answer>