Hello. You did not present the experiment to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.
It is likely that the amount of water presented in the question above is a variable in the experiment. This allows us to consider that if the experiment were carried out with different amounts of water, this experiment would provide inaccurate data and the results would not be considered true, making it impossible for a precise conclusion to be revealed.
This would happen because an experiment must distribute the variables, in all treatments, with the same amount and intensity. Therefore, to promote accurate data, the experiment must use an equal amount of water in all treatments.
Answer:
the amount of alcohol consumed
Explanation:
Independent variable: In psychology, the independent variable is defined as the psychology experiment's characteristics that are being changed or manipulated. In a psychological experiment, the researcher controls or changes the independent variable and affects directly the dependent variable.
Example of the independent variable: Time and age.
The independent variable is considered to be as independent of everything else in an experiment.