Visual IQ puzzle (MENSA Denmark, difficulty 1)
Correct answer: F
Explanation: Ther are repetitions along the rows and the columns. For each image there are 2 red squares that move following a pattern. Consider the top red square in the top left image. Going from left to right, the square moves one position to the right. Going top to bottom, the square moves one position to the bottom. Now consider the bottom red quare in the top left image. Going left to right, the red quare moves one postion to the left. Going from top to bottom, the red square moves one position to the top.