Which of the following is a requirement of the scientific method?

• A. Only qualitative data can be used in analysis.
• B. Results should be kept confidential to prevent bias.
• C. Experiments must always confirm the hypothesis.
• D. Hypotheses must be testable and falsifiable.

Answer: (D)

Verified step by step guidance

1. Understand the scientific method: The scientific method is a systematic approach to investigating natural phenomena. It involves making observations, forming a hypothesis, conducting experiments, analyzing data, and drawing conclusions.
2. Clarify the concept of a hypothesis: A hypothesis is a proposed explanation for a phenomenon. It must be testable (able to be examined through experiments or observations) and falsifiable (able to be proven false if evidence contradicts it).
3. Evaluate the incorrect options: Analyze why the other statements are not requirements of the scientific method. For example, qualitative data can be used, but quantitative data is also valid. Results should be shared for peer review, not kept confidential. Experiments do not always confirm the hypothesis; they may refute it, which is part of the scientific process.
4. Identify the correct requirement: The key requirement of the scientific method is that hypotheses must be testable and falsifiable. This ensures that scientific investigations are objective and based on evidence.
5. Summarize the reasoning: The scientific method relies on hypotheses that can be tested and potentially disproven. This allows for the advancement of knowledge through experimentation and critical analysis.