Answer: Option D:The height of each plant every week
Explanation: In any experiment there are two variables one is independent variable and one is dependent variable.
One values of the experiment that can be changed is the independent variable that is amount of water given to the plants each week.
The values that cannot be changed and is dependent on independent variable is called dependent variable. This means that they change due to the change in the independent variable.
Here, the information that is to be recorded is the dependent variable. Height of each plant every week.