Which step of the scientific method involves testing a hypothesis with experiments?

• A. Observation.
• B. Formulating a hypothesis.
• C. Drawing conclusions.
• D. Experimentation or testing.

Answer: (D)

Testing a hypothesis with experiments is the step where predictions are evaluated by carefully manipulating variables and observing the outcomes. By designing controlled tests, you gather evidence that shows whether the hypothesis is supported or refuted, turning ideas into data. Observation alone is just noticing phenomena, not testing predictions. Formulating a hypothesis is about proposing a testable statement, not performing the tests. Drawing conclusions happens after results are collected and analyzed to interpret what the data mean.