Question

the heliocentric theory states that the center of the universe is
○ earth.
○ the sun.
○ the moon.
○ jupiter.

Explanation:

The heliocentric theory, proposed by Nicolaus Copernicus, posits that the Sun is at the center of the universe (in the context of the solar - system - centered view of that era). This was a contrast to the earlier geocentric (Earth - centered) view.

Answer:

the sun.