Answer :
Answer and Explanation:
A confounding variable is an extraneous variable that may influence and therefore "confound" the result from an experiment of the independent and dependent variable. Here we could define the explanatory and the response variable which can be likened to the results of the experiment with dependent and independent variables. In this case the explanatory variable is asks whether or not a person used candy cigarettes as a kid and the response variable is eventual smoking in adults. The smoking status of the parents here could be a confounding variable if it is linked to the explanatory and response variables so that it is able to bring an influence too. Therefore, John could say “Children who had parents that smoked have more most likely used candy cigarettes when they were kids "