Why was the Copernican model a controversial proposition? Select the three correct answers

Question

A. It was a complex model
B. It contradicted religious doctrine of the time
C. It contradicted established scientific understanding
D. It demoted Earth to just another planet
E. It was mostly incorrect
F. It was not supported by observations

Answer 1

The three correct answers regarding why the Copernican model was a controversial proposition are:

B. It contradicted religious doctrine of the time
D. It demoted Earth to just another planet
C. It contradicted established scientific understanding

These points highlight the challenges Copernicus faced in promoting a heliocentric model that went against the geocentric view prevalent in his time, which was also supported by religious beliefs.