The correct answer to this question is A, Orange. In the color spectrum, orange is the color between red and yellow. Looking at the umbrella, one can see the hints of red and yellow. Many associate the color orange with the holiday Halloween, where the theme colors of this holiday are black and orange.
It immediately catches one's eye. This color is also associated with fall. Orange represents energy, warmth, and excellent health. This type of question would be found on a test for an early learner, who is just developing the sense of identifying colors.