Answer:
Answer is C. Observe planetary position with sufficient accuracy so that Kepler could later use the data.
Explanation:
Tycho Brahe was an astronomer and astrologer which support the geocentric theory, that is , theory about the earth, and the solar system. He built astronomical instruments used in his work or findings.
In his findings , he observed the planetary position, that is ,the distance between the sun and the earth, as the earth goes or moves around its orbit.
This findings was later used by Kepler in discovering the laws of planetary position.
