What is a Dependent Variable

Something that remains the same
A variable whose value depends on and does not depend on another
A variable whose variation does not depend on that of another and is on the x-axis. (What I change in the experiment)
A variable whose value depends on that of another and is on the y-axis (something you measure)

The correct definition is: A variable whose value depends on that of another and is on the y-axis (something you measure).

A dependent variable is a variable whose value depends on and is influenced by another variable in an experiment. It is commonly represented on the y-axis of a graph because it is the variable that is being measured or observed. In other words, the dependent variable is the outcome or response variable that is affected by changes in the independent variable, which is the variable being manipulated or changed in the experiment.