Some theories are developed from repeated testing of a single hypothesis. Cell theory, germ theory, and the theory of evolution all have developed from the testing of multiple related hypotheses. Which statement best explains why some theories develop this way?
Answer
A
A hypothesis tests many variables at once, which can lead to new hypotheses.
B
Multiple related hypotheses will become theories before a single hypothesis does.
C
Each scientist has used different wording when developing his or her hypothesis.
D
Each experiment reveals a different piece of information that is needed to develop the theory.
Explanation
A scientific theory is supported by a broad body of evidence, often gathered through many experiments. Each experiment can test a related hypothesis and add a different piece of information, helping build the overall explanation. So the best answer is “Each experiment reveals a different piece of information that is needed to develop the theory.”
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