Find the missing character?

Answer: Option C

Start with the top left hand segment of the top left hand square, and move around the other squares in a clockwise direction. Letters are written in sequence in steps of 5 letters at a time for the top left segment, 6 letters for the top right, 7 for the bottom right and 8 for the bottom left. The relative positions of the letters in each sequence move 1 segment clockwise at every step.