(50 marks) Section B-Case Study The Environmental Protection Department (EDP) of Hong Kong Government would like to promote consumer conservation behaviors in the local catering industry. You are asked to conduct a marketing research to inform the EDP on the possible strategies it can adopt to reduce the use of plastic straws among consumers. b) You are asked to design a questionnaire for assessing consumers' willingness to reduce the use of plastic straws. Please propose THREE possible independent variables that may predict the dependent variable (i.e., willingness to reduce the use of plastic straws). For EACH independent variable, explain why you think it can influence the dependent variable, and write a measurement scale to measure it. (18 marks) d) Illustrate with THREE examples how an ethical researcher could exercise good practices in collecting data from respondents. (9 marks)