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In which statement is the independent variable correctly identified?

Answer and explanation

Correct answer: Using different temperatures and calling temperature the independent variable

The independent variable is the factor that the investigator deliberately changes to study its effect. The dependent variable is the result that is measured, while other relevant conditions should be kept controlled. Identifying these roles helps make an experiment fair and makes the relationship between cause and result easier to examine.

In option A, different temperatures are intentionally used, so temperature is the independent variable. Plant height or another measured outcome would be a dependent variable, not the changed factor. Counting seedlings and recording time describe measurements or conditions, but they do not become independent variables merely because they are mentioned. Therefore option A correctly identifies the deliberately changed factor.

Related tags

Independent VariableTemperatureExperimentHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScienceClass 9 Mcq

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