Marjorie is conducting a science experiment to measure the amount of pollution produced by cars that used gasoline containing different amounts of lead. Identify the dependent and independent variables. (1 point)
i = conducting a science experiment
d = the amount of pollution
i = gasoline containing different amounts of lead d = the amount of pollution
i = gasoline containing different amounts of lead
d = type of car
i = amount of pollution
d = gasoline containing different amounts of lead
Independent variable: gasoline containing different amounts of lead
Dependent variable: the amount of pollution