Answer:
A. Joel has abnormal drainage from his ears.
Explanation:
I just got it right on the Unit Test from Edge2020.
<em>Hope it helps!</em>
As a freshman myself, I say just prepare for the worst. Things in high school aren’t easy, nor will they get easier.
In a study, the independent variable is the thing that you change to see how the change produces different results. In this study, the independent variable would be the use of nicotine.
