Ans: A
Mark $A$ on the given figure as shown below.
Mark $A$ on the given figure as shown below.
![](img/2009/2009PaperII29_fig01.png)
Rotate the figure to the following position. It overlaps with its original pattern perfectly the first time.
![](img/2009/2009PaperII29_fig02.png)
Rotate the figure to the original position. It overlaps with its original pattern perfectly the second time.
![](img/2009/2009PaperII29_fig01.png)
Therefore, the given figure is $2$ folds of rotational symmetry.