Tycho Brahe's contribution to astronomy included: Tycho Brahe's contribution to astronomy included: inventing the telescope. proving that Earth orbits the Sun. collecting data that enabled Kepler to discover the laws of planetary motion.

C: collecting data that enabled Kepler to discover the laws of planetary motion

Explanation:

He developed precise instruments available before telescope was discovered. Thus, option A is not part of his contribution.

Nicolaus Copernicus is the one that proved that the earth orbits the sun, thus option B is not part of Tycho's contribution.

Tycho's observations of planetary motion which had great accuracy is what proved that circular orbits could not work. Now, this detailed and accurate observations of the planet's position was fundamental in helping Kepler to discover the laws of planetary motion. So option C is correct.