In the following question, select the figure that should come in place of the question mark (?) from the given alternatives.

The logic follows here is:

"The numbers of triangles inside the figure are increasing in consecutive odd numbers each successive figure."

Figure (1), has one triangle.

Figure (2), has three triangles.

Figure (3), has five triangles.

Figure (5), has nine triangles.

Following the same logic, figure (4) will have seven triangles.

So the figure that will replace the question mark (?) in the following figure series is shown below :

Hence, the correct answer is "option 4 ".