in one page, please answer this question: Describe the main features of either ethnographic, phenomenologic, and/or grounded theory studies and why they might be used to examine problems within social, political, or historical contexts. Attached is the chapter that should be used to reference, and then one article as well, the reference for the power point is: Polit, D.F. & Beck, T.B. (2018). Essentials of nursing research: Appraising evidence for nursing practice. 9rd ed. Philadelphia: Wolters Kluwer Health.