Reproducibility is demonstrated when repeated experiments yield the same conclusions even if done by different people or with different equipment.

• A. This describes reproducibility.
• B. This describes validity.
• C. This describes uncertainty.
• D. This describes a sketch graph.

Answer: (A)

Reproducibility means results stay the same when the experiment is redone by different people or with different equipment. The statement captures this idea: regardless of who conducts it or what tools are used, the same conclusion is reached, showing the finding isn’t tied to a single researcher or instrument. This is different from validity, which asks whether the experiment actually measures what it’s supposed to measure; something can be reproducible but not truly valid if it’s addressing the wrong question. Uncertainty is about doubt or error in measurements, not about whether others can replicate the result. A sketch graph isn’t related to the idea of repeating results. For example, if several researchers using different thermometers obtain the same trend in temperature change, that demonstrates reproducibility.