ou want to test a new drug that supposedly prevents sneezing in people allergic to grass. what is the independent variable? 2. you want to see if playing music makes plants grow taller. what is the independent variable in this experiement? 3. a soap manufacturer wants to prove that their detergent works better to remove tough stains. what is the independent variable? 4. you think that a certain part of your brain is important in memory. to test this, you will remove this part of the brain from rats and see if they remember how to get through the maze. what is the dependent variable in this experiment? 5. you think that a certain part of your brain is important in memory. to test this, you will remove this part of the brain from rats and see if they remember how to get through the maze. what is the independent variable in this experiment?