Answer:
Confounding variable
Explanation:
Confounding variable refers to the type of variable that can disrupt the validity of the experiment by giving a certain effect to the variable.
The experiment above was designed to measure mood elevation among the subjects, but the living situation among the subjects are really different among one another and cannot be controlled by the researchers.
The independent variable is the amount of alcohol.
The dependant variable is the coordination skills. The skills depend and are affected by the amount of alcohol drunk.
Not sure.. i think maybe lots of people grow....stuff there
