Which of these statements is most likely correct about the nebular theory of formation of solar system? . a. it is based on facts which are non-testable. . b. it is invalid because it is based on non-observable facts. . c. it cannot be replaced by modern theories in the future. . d. it was proposed after several scientific investigations proved it valid.

The statement which is most likely correct about the Nebular theory of formation of solar system is “It is based on facts which are non-testable.” The correct answer between all the choices given is the first choice or letter A. I am hoping that this answer has satisfied your query and it will be able to help you, and if you would like, feel free to ask another question.