Find out from amongst the four alternatives as to how the pattern would appear when the transparent sheet is folded at the dotted line.

     (X)                     (1)                 (2)                 (3)                 (4)

On the basis of given figures in above question , we get
In each subsequent figure the three small squares move in anticlockwise direction.
Thus , figure ( 4 ) will come on the place of ? in question figure .As shown in answer figures .

As we know that the mirror image always be opposite the original image across the given mirror. Given image will become opposite to the original image.As shown in given below .

According to given question figure ,
we can say that the mirror image always be opposite the original image across the given line. Given image will become opposite in mirror across the given line MN.As shown in figure .

As we can see that All others have been divided into six parts. But figure (4) is different to others .

As per the given figure in above question, it is clear that
In each subsequent figure the three smaller designs move in clockwise direction along the apex of the triangle and arrow is inverted.
Hence , figure ( 4 ) will come on the place of ? from answer figures .

All outer elements having the replica of its present inside of that, except option (c)

From first figure to second figure the shaded parts move one sector in clockwise direction.

From first figure to second figure the main design rotates through 900 clockwise and a small shaded design is introduced.