As you know from the classes after you are done with the questionnaire, you have to sample the respondents before going for the fieldwork for data collection. Sampling can be done using nonprobability sampling or probability sampling. Which one in your opinion works properly with the problem that has been 'Pampers' sales is declining'? Among these techniques, which one do you feel is the best sampling technique for your problem? Discuss with examples and justifications. (marks-20)