Question: Wheelan suggests that we have arrived at the answer that smoking does have an effect on the rates of lung cancer but there are some issues with that. What is the most problematic explanation? Need Assignment Help? Question options: People always tell the truth on surveys, so we can just conduct a questionnaire with a randomly sampled population. It is very hard to conduct an experiment because it is almost impossible to isolate just the smoking behavior from other behaviors that humans would do who either smoke or do not smoke. We cannot conduct an experiment to check the direct relationship because it is illegal. We can just ask every person who has lung cancer whether they have smoked in the past.