Aristotle first proposed that was at the center of the solar system.
a.
the sun
c.
earth
b.
the moon
d.
jupiter

Earth

Explanation:

Before the Heliocentric theory, Ptolemy's and Aristotle's geocentric model of the solar system was popular. Geocentric model considers Earth as the center of the solar system with stars, planets, sun and moons revolving about it in concentric orbits. This model was supported by the observation that the sun seemed to go about the Earth in every 24 hours.

On the other hand, Copernicus proposed Heliocentric model- having sun at the center of the solar system.

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