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? a hypothesis tests many variables at once, which can lead to new hypotheses. multiple related hypotheses will become theories before a single hypothesis does. each scientist has used different wording when developing his or her hypothesis. each experiment reveals a different piece of information that is needed to develop the theory.

The correct answer is last option i.e. Each experiment reveals a different piece of information that is needed to develop the theory.

Some theories are based on the findings of different scientists and different hypothesis which are finally combined to give a single theory. It happens because in certain theories, finding of a single scientist is just not enough to establish the entire theory. So, findings of many scientists are compared and then they are combined to develop a single theory. All the findings related to a particular theory might not be discovered by just a single scientist because it takes years to find out an information & then establish it. One of the best examples for this is theory of evolution. For formulation of theory of evolution Charles Robert Darwin & Alfred Russel Wallace gave different piece of information which were then combined to develop the theory.