How many triangles are there in the given figure?

First (X) moves down ward one step then (-) moves left side, then again (X) and so on.

Every time the curved are moves clock wise and additional are joins.

Semicircles are attached to the parallel sides of the design.

On the basis of given figures in above question , we can see that
In each subsequent figure the topmost design moves to the lower most position while all other designs move one step upward.
Thus , figure ( 3 ) will come on the place of ? from answer figures .

All squares, + and circle moves anti clock wise and on 2nd step the arcs get laterally inverted.

Answer D