Question

keep the flashlight on the longest.\ the test variable (independent variable) in reginas experiment is the . the outcome variable (dependent variable) in this experiment is the the flashlight stays on. brands of batteries number of batteries amount of voltage hypothesis control number of hours

Explanation:

In an experiment, the independent variable is what is changed or tested. Here, Regina is likely testing different brands of batteries. The dependent variable is what is measured as a result. The number of hours the flashlight stays on depends on the battery brand.

Answer:

Independent variable: brands of batteries. Dependent variable: number of hours.