Step-by-step explanation:
The 7 rings on the Armillary Sphere represent the seven planetary orbits. These include the movements of the Sun, the Moon, and the five planets visible to the unaided eye: Mercury, Venus, Mars, Jupiter, and Saturn.
These celestial bodies were known to the ancients as "wanderers" due to their distinct motion across the sky compared to the fixed stars. Ancient cultures often associated these planets with their gods, and their movements were tracked for both religious and astrological reasons.
This powerful symbolism led to the creation of the Armillary Sphere, which served as a model of the celestial realm with the Earth at its center.
The Armillary Sphere is an intricate instrument that epitomizes the ancient understanding of the heavens, becoming a tool for various civilizations to navigate the skies and chart the paths of these significant celestial entities. The correct option is b.