The student's score in the concentration test is the dependent variable. Option B is correct.
What is the dependent variable?
It is the variable that is dependent upon the other factors in the experiment. It is usually the final result of the experiment.
The student's score on the concentration test depends upon the student's ability to concentrate, stay awake, and heart rate.
Students' ability to concentrate, stay awake, and heart rate is independent variables.
Therefore, the student's score in the concentration test is the dependent variable.
Learn more about dependent variables:
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