In the first scenario, it would be appropriate to use self-administered questions to reveal the underlying issues concerning the research questions. This is because the target population is large. The experiment seeks to uncover extra information to supplement the research question. This makes it crucial to adopt the use of self-administered questionnaires during the study. The second scenario would require application of personal interview or self-administered questionnaires. This is because the geographical coverage of the study is appropriate for any of the two options or research methods. The third scenario would allow the company to maximize the benefits of telephone survey in seeking to unveil the reasons behind the research questions. This is because the geographical arrangement of the agents of study does not support the application of personal interview and self-administered questionnaires. The fourth scenario advocates for application of personal interview. This is because the financial officers work in the same corporation hence geographical advantage. Self-administered questionnaires would be applicable for the fifth scenario because of the size of the population...

This research method would involve the application of self-administered questionnaires. This would allow the research or the experiment to maintain focus in relation to the research question. The study would operate on pre-determined hypotheses as a form of directives to the research.
References

Cooper, D.R., & Schindler, P.S. (2011). Business research methods. New York: McGraw-Hill/Irwin.

Hinchey, P.H. (2008). Action research primer. New York: Peter Lang.

Kothari, C.R. (2005). Research methodology: Methods & techniques. New Delhi: New Age

International (P) Ltd.

Silverman, D. (2004). Qualitative research: Theory, method and practice. London [u.a.: SAGE