Which of these statements is most likely correct about the nebular theory of formation of planets? a. it will become a law if it is proved valid. b. it will not be replaced by other theories in the future. c. it was based on the study of non-observable and non-testable data. d. it was proposed after current evidences were investigated several times.

Correct answer is D.

Explanation:
A) is not correct answer because this type of theory can not become law. Laws are properties that are same in any part of universe. Nebular theory is not correct for every part of universe.

B) is not correct answer because this theory could be replaced if some evidence show that some other theory is more likely to be correct.

C) is not correct answer because the study has been done on other nebulas in our galaxy. There are many nebulas and by obserwing them this theory was developed.

The duration of a photographic flash is related to an rc time constantly

As newton's first law states a object in motion stays in motion