Question

Which of the following best describes the work of Descartes?

He proved through calculus the existence of a heliocentric universe.


He confirmed Christian teachings that the heavens are fixed and unmoving.


He proposed that through the use of reason and doubt individuals may arrive at understanding.


He demonstrated through observation of the night sky that planets orbit the sun.

Answer 1

He proposed that through the use of reason and doubt individuals may arrive at understanding.

Answer 2

He demonstrated through observation of the night sky that planets orbit the sun.
i believe thats right