Which idea of the geocentric model of the solar system was most contested by some philosophers?(1 point) 1. The motion of the planets was uniform and circular.

2. The universe was the only object they could see.
3. Earth was the center of the universe.
4. Earth was not moving.

3. Earth was the center of the universe.

3. Earth was the center of the universe.

The idea of the geocentric model of the solar system that was most contested by some philosophers is option 1: The motion of the planets was uniform and circular.

To find this answer, we can examine the key concepts of the geocentric model and the arguments presented by different philosophers of that time. In the geocentric model, it was believed that the Earth was at the center of the universe, and all other heavenly bodies including the planets, the Sun, and the Moon, revolved around it in perfect circles.

However, one of the criticisms raised by some philosophers, such as Aristarchus of Samos, was that the observed motion of the planets did not appear to be uniform and circular. They noticed irregularities in the apparent speed and path of the planets as they moved across the night sky. These observations contradicted the idea that the motion of the planets was uniform and circular, which was a fundamental principle of the geocentric model.

Therefore, the motion of the planets being uniform and circular was the idea of the geocentric model that faced significant challenges from some philosophers.