Question #6422552Single Choice
Biology
Question
In an experiment to study the effect of a new drug on blood clotting time in rats, the researcher measures the clotting time before and after administering the drug.
What is the independent variable in this experiment?
Options
A
The blood clotting time
B
The type of rats used
C
The administration of the drug
D
The diet of the rats
Answer & Analysis
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