In the practice of science, how is the accuracy of a scientific claim evaluated? by repeating the experiments that led to the claim being made
by carefully gathering and analyzing a variety of opinions from the public
by critically considering alternative scientific claims or explanations
by testing the claim's predictions in a controlled setting

By testing the claim's predictions in a controlled setting

It involves careful observation, applying rigorous skepticism about what is observed, given that cognitive assumptions can distort how one interprets the observation. It involves formulating hypotheses, via induction, based on such observations; experimental and measurement-based testing of deductions drawn from the hypotheses; and refinement (or elimination) of the hypotheses based on the experimental findings.

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