Biology

The correct answer is D.Dependent variable.

In a scientific experiment, the independent variable is manipulated or changed to observe how it affects the dependent variable. The dependent variable is what the scientist measures or observes to see if it is influenced by changes in the independent variable.

Here's why the other options are not correct:

A.Prediction: A prediction is made before the experiment based on the hypothesis, but it is not directly affected by the independent variable.