Answer: The correct answer is "path of orbit of the planets".
Explanation:
Kepler gave his three laws which are known as Kepler's laws.
In his first law, he stated that the planets revolve around the sun in an elliptical orbit. The sun is located at one of the two foci of the ellipse.
This law is also known as the law of orbits.
Therefore, Kepler discovered that the path of the orbit have elliptical orbits.
