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A scientific claim is tested only for supportive outcomes with no plan for opposing results. What is the main weakness?

Answer and explanation

Correct answer: The test is not fair or falsifiable

The direct answer is A: the test is not fair or falsifiable. A scientific claim must be tested in a way that could show either supporting or opposing evidence. Here, the investigator has planned only for results that agree with the claim. Step by step: first state the claim; next decide what observation would support it and what observation would disagree with it; then collect evidence without ignoring inconvenient results. If opposing results were never possible, the claim cannot be properly checked and the test is biased. Option A is correct because it identifies both the unfair selection of evidence and the lack of falsifiability. Option B is wrong because a diverse sample is not automatically a weakness and may improve representation. Option C is wrong because a precise instrument usually improves measurement. Option D is wrong because clear results are helpful, not a defect. Memory cue: a good scientific test must allow the claim to fail.

Related tags

FalsifiabilityFair TestScientific ClaimNature And Meaning Of ScienceExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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