plz answer all is about astr 1830

Problem 1 Which of the following is not true about any given scientific theory? (a) Science progresses though the creation and testing of models of nature; (b) Event the strongest theories can never be proved beyond all doubt; (c) A theory is essentially an educated guess. Explain your reasoning for which option you chose and why you ruled out the other two. Problem 2 When Einstein's theory of relativity gained broad acceptance after being demonstrated by observations, it proved that Newton's theory was (a) wrong; (b) incomplete: (c) just a gue Explain your reasoning for which option you chose and why you ruled out the other two Problem 3 If you look at the stars on a clear night. and give some time for your eyes to adjust, you may notice that some stars are very red (Betelgeuse in the constellation Orion is a good example), and some are blue. If we compare a blue star and a red star, which has the higher surface temperature? Explain your answer in your own words