31.Which of the following is a formal research method?a.Performing a scientific experimentb.Searching the Webc.Conducting an interviewd.All answer choices are examples of formal research methods.ANSWER:RATIONALE:Long reports and complex business problems generally require formal researchmethods, such as accessing electronic sources; searching for information inlibraries; investigating primary sources through questionnaires, interviews, andfocus groups; and conducting scientific experiments.d