This question is based on the following poem:    seasons are celebrations.    a year's a ferris wheel.    both honor our world's habit    of spinning 'round a star. which one of the following sentences best expresses the main idea of this poem? a. there are four seasons in a year. b. seasons are celebrations, while a year on earth is a habit. c. the world has a habit of spinning around. d. seasons and ferris wheels are like earth's journey around the sun.