<em>It involves making observations, formulating a hypothesis, and conducting scientific experiments. Scientific inquiry starts with an observation followed by the formulation of a question about what has been observed.</em>
<em>Hope this helps</em>
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<em>Please give me brainliest</em>
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<em>Thank you for letting me answer your question </em>
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<em>Thank you,</em>
<em>Florida Mermaid</em>
I’m pretty sure it’s B. Relative saying
Fatigue can have causes that aren't due to underlying disease. Examples include lack of sleep, heavy exertion, jetlag, a large meal, or aging.