Answer: m= dependent variable , s =independent variable because the distance he runs depends on the time.
Explanation:
In an experiment, the experimenter manipulates the independent variable to see the change in the dependent variable.
Here, Distance is the dependent variable that depends on time i.e. time = independent variable.
The meters he runs, m, in s seconds is given by the equation m=3s.
Thus, m= dependent variable , s =independent variable because the distance( meters) he runs depends on the time( seconds).