Select the figure from among the given options that can replace the question mark (?) in the following series.

​​Observe the direction of arrows from left to right in each box:

The arrow direction is rotating 90° clockwise step by step.

1st box → Up (↑)

2nd box → Left (←)

3rd box → Down (↓)

4th box → Right (→)

5th box → Up (↑)

After Up → Left → Down → Right, the cycle repeats.

Therefore, the figure that replaces the question mark is a LEFT arrow (←).​​

Thus, the correct option is: (a)