The main difference between a hypothesis and a theory in scientific research is best described by the second option:
A hypothesis is a tentative explanation that can be tested by experiments, while a theory is a well-substantiated explanation based on a body of evidence.
In summary:
- A hypothesis is a proposed explanation or prediction that can be tested through research and experimentation.
- A theory is a comprehensive explanation of an aspect of the natural world that is supported by a significant amount of evidence and has withstood extensive testing and scrutiny.