1. 

Find out the answer figure which completes the problem figure matrix.

A. 1
B. 2
C. 3
D. 4

Answer: Option D

Explanation:

In each row, the circle is unshaded in one of the figures, it has its upper part shaded in another figure and its RHS part shaded in the third figure. There are three positions of the two triangles, each of which used only once in row. Also, two of the figures in each row have one triangle shaded.