which statement describes a scientific theory?\na theory states how something behaves without explaining…

which statement describes a scientific theory?\na theory states how something behaves without explaining why.\na theory is a proven fact that cannot be changed.\na theory changes based on new observations and testing.\na theory is based on a single hypothesis or observation.
Answer
Brief Explanations:
A scientific theory is not a single - fact or unchanging. It evolves as new evidence from observations and testing comes to light. A law states how something behaves without explaining why. A theory is based on multiple hypotheses, observations, and extensive testing.
Answer:
A theory changes based on new observations and testing.