Select a suitable figure from the four alternatives that would complete the figure matrix.

Select a suitable figure from the four alternatives that would complete the figure matrix.

A.

1

B.

2

C.

3

D.

4

Correct answer is D

In each row, there are three types of outer elements (circle, triangle and square), three types of inner elements (circle, triangle and square) and three types of shadings in the inner elements (black, white and lines).