Which statement best describes a hypothesis?

Which statement best describes a hypothesis?

• A. A testable explanation or interpretation that can be verified or falsified
• B. A casual belief without evidence
• C. A data analysis method
• D. A final proven fact

Answer: (A)

A hypothesis is a testable explanation or interpretation that can be verified or falsified. In science, it’s more than a guess: it makes a specific claim about how things work or relate, so you can design experiments or observations to test it. The key feature is falsifiability—there must be a possible outcome that could show the hypothesis is wrong. If experiments support it, you gain evidence, but the hypothesis remains open to revision with new data. It’s different from a casual belief without evidence, which isn’t testable; it isn’t a data analysis method, which is about examining data rather than proposing explanations; and it isn’t a final proven fact, which would be settled and unchangeable. For example, a hypothesis could be: if a mineral contains calcite, it will fizz when exposed to dilute acid. This makes a clear, testable prediction that can be supported or refuted by observation.