Select the figure from among the given options that can replace the question mark (?) in the following series.

In each figure, the circle is on the innermost part. By this options (c) and (d) can be eliminated.

Now in the first figure, the given shape has eight sides. Similarly in the second, third, and fourth figures, the given shape has seven, six, and five sides. So in the fifth figure, the shape should have four sides. By this option (a) can be eliminated.

Hence the figure given in option (b) will come in place of the question mark.