Which answer figure will complete the pattern in the question figure?

By symmetry, to complete the bottom right part of the figure, we need a right diagonal (to complete the fourth side of rhombus), hence first option is eliminated. Also, we need a circular figure at top left corner (to complete the circular pattern at the centre of the figure), hence third option is eliminated.

Also, we need to have 2 semi circles each on the left and top side of square to complete symmetry as shown in second figure.

=> Ans - (B)