Answer: the answer is in the file
Explanation:
The correct answer is C. luster refers to how much light is in an object or how much reflects off. hope this helps, have an amazing day :)
Amplitude, is the answer to the question
This question is so vague as to render it useless.
I suspect the answer they're looking for is Kepler advanced Copernicus's work as is stated. but the way science works is that anyone who has contributed will have their work built on. for example, Newton advanced Kepler's work on the elliptical path of planets as Einstein advanced Newton's work.