6 (1 point) Use the guidelines to evaluate the study. From the information given, what is the biggest flaw in the study? You would like to know if the customers of your video store are satisfied. You hand a customer satisfaction questionnaire to every customer who comes into the store and ask them to fill it out and place it in a box after they check out. The questionnaire asks customers to rate their satisfaction on a scale of 1-10 with regard to the video selection and customer service. Question 6 options: Participation Bias Setting may not encourage honest responses Wording of the questions Selection Bias Confounding variables