There is a relationship between smoking status and lung health (good, average, poor). People who smoke tend to have worse lung health than those who do not smoke. What is the explanatory and response variable in this situation? a. Explanatory: the people. Response: their lung health. b. Explanatory: the people. Response: whether they smoke or not. c. Explanatory: smoking status. Response: lung health (good, average, poor). d. Explanatory: lung health (good, average, poor). Response: smoking status