Question

1. the \cause\ of the experiment, what we are purposefully manipulating or changing is the a. constant b. control group c. dependent variable d. independent variable

Explanation:

In an experiment, the independent variable is what the researcher manipulates or changes to observe its effect on the dependent variable. A constant is something that stays the same throughout the experiment. The control group is used for comparison and is not what is being manipulated. The dependent variable is the outcome that is measured and is affected by the independent variable.

Answer:

D. independent variable