Which of these models of the solar system first proved that the sun is at the center of the solar system?

ptolemy's geocentric model
brahe view of the solar system
kepler view of the solar system
copernicus' heliocentric model

i think the answer is c-kepler, because of the word "proved" in the question.
this is why, "kepler used the meticulous notes and data gathered by brahe to make discoveries about the motion of the planets. kepler’s work proved copernicus’s view that the solar system was heliocentric.".
can someone confirm my thinking? hate tricky questions : )

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine