Question 10 • PA Human Anatomy & Physiology A 2026-2027 SMITH IC
A scientist designed and conducted an experiment to test a hypothesis, and then formed a conclusion from her results. Next, she collected and analyzed more data and formed another conclusion. Which statement best justifies the fact that she skipped the hypothesis and experimental design steps of the scientific method?
Answer
A
The scientist must have realized that she performed one of the steps incorrectly.
B
The scientist was unhappy with the first data set and started the experiment over.
C
The scientist was repeating the experiment to improve the validity of her data.
D
The scientist was planning to form a hypothesis after completing the experiment.
Explanation
Repeating an experiment and collecting additional data can make results more reliable and strengthen the validity of the conclusions. Because the scientist had already formed a hypothesis and designed the experiment, she could repeat the same procedure without repeating those planning steps. This supports choice C: she was repeating the experiment to improve the validity of her data.
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