How does the article develop the central idea? A. by providing examples of how the Earth's movement affects which
constellations are visible
B. by comparing the shapes of constellations that make up the zodiac
to the animals seen in zoos
C. by outlining why constellations like Orion
should have been included in the signs of the zodiac
D. by demonstrating that people relied on the path of stars through the sky to help them navigate