Question

Your mom keeps telling you that eating a healthy breakfast

will help you do better in school. To see if she is right, you
eat a bowl of cereal with fruit and drink a glass of juice for
breakfast for one month. For the next month, you eat three
cookies and drink a can of soda. At the end of each month,
you record your grades in all your classes to see if she was
right. What is the independent and the dependent variable !

Answer 1

According to my search:

Independent variables are what we expect will influence dependent variables. A Dependent variable is what happens as a result of the independent variable.

Independent variable: eating healthy

dependent variable: doing better at school