A figure marked on transparent sheet is given and followed by four answer figures, one out of these four options resembles the figure, which is obtained by folding transparent sheet along the dotted line. This option is your answer.

When a transparent sheet is folded along a dotted line, the pattern on one side overlays the pattern on the other side by flipping horizontally or vertically (acting like a mirror image transformation for the folded part).
By folding the left or right half exactly onto the opposite side, the asymmetric components merge.

Analyzing the overlay positions shows that the combined drawing perfectly matches the layout depicted in Option A.