Which of the following statements is correct? a. a hypothesis that does not generate a testable prediction is not useful. b. common sense is usually a good substitute for the scientific method when trying to understand the world. c. the scientific method can be used only to understand scientific phenomena. d. it is not necessary to make observations as part of the scientific methode. all of the above are correct.

a. A hypothesis that does not generate a testable prediction is not useful.

Explanation:

In the scientific method, we generate a hypothesis to explain a phenomenon. After this, it is necessary to create a method to test the hypothesis and make predictions. Moving forward, we test this methodology, generating results and reject or not reject the hypothesis. If the hypothesis can't be tested, the scientific method can't be applied.

actually the answer is c