What were the main features of the aristotelian-ptolemaic model of the cosmos

Aristotle's very own model of the Universe was an improvement of that of Eudoxus who had likewise examined under Plato. It had a progression of 53 concentric, crystalline, straightforward circles pivoting on various tomahawks. Every circle was focused on a stationary Earth so the model was both geocentric and homocentric.  

Under the geocentric model, the Sun, Moon, stars, and planets all circled Earth. The geocentric model filled in as the transcendent portrayal of the universe in numerous antiquated civic establishments, for example, those of Aristotle and Ptolemy. Two perceptions upheld the possibility that Earth was the focal point of the Universe.

a.   it resulted in widespread unemployment.

the answer is 1.. i think