All the scientific theories used to explain the formation of the solar system are

After a thorough research, there exists a question that has the following questions.

A. outdated

B. imaginative

C. non-testable

D. unacceptable

So, the correct answer is (C) non-testable. The reason why it is non-testable because these are considered theories of the solar system in which non of us exists before it was created.