(a)Identify the relevant population for the below foci, and suggest the appropriate sampling…

(a)Identify the relevant population for the below foci, and suggest the appropriate sampling design to investigate the issues, explaining why they are appropriate. Wherever necessary identify the sampling frame as well. 10 marksA public relations research department wants to investigate the initial reactions of heavy soft- drink users to a new all-natural soft drink’.(b) What type of sampling design is cluster sampling? What are the advantages and disadvantages of cluster sampling? Describe a situation where you would consider the use ofclustersampling. 10 marks