The independent variable (cause) is the color of the carton, which is green.
In an experiment, there are two (2) main types of variables and these include:
An independent variable can be defined as the variable that is being manipulated by an experimenter or researcher. Thus, it is typically considered to be the cause in an experiment.
In this scenario, the independent variable (cause) is the color of the carton, which is green.
Read more on experiment here: brainly.com/question/17216882