Visual IQ puzzle (MENSA Sweden, difficulty 2)
Correct answer: B
Explanation: Each figure can contain one of three different shapes: circle, square, triangle. Each shape can have one of three patterns: white, black or striped. Consider the diagonals from top-right to bottom-left: the figures along the same diagonal have the same shape. Consider the diagonals from top-left to bottom-right: the figures along the same diagonal have the same pattern.