The three correct answers that describe Aristotle's model of the solar system are:
- Each planet is attached to a crystalline sphere.
- Each planet spins on an epicycle.
- Earth is at the center.
In Aristotle's geocentric model, Earth is considered the center of the universe, with celestial bodies, including the planets, attached to transparent, rotating crystalline spheres. The idea of epicycles was also introduced to explain the complex movements of planets in the sky.