Identify the examples of a case study. Example(s) Drag appropriate answer(s) here a two-week study in which a researcher accompanies a single doctor on her rounds a two-day, telephone-based political opinion poll of 350 randomly selected US households a two-year study of economic activity in a village of 150 people a two-month study of fashion trends in several major US cities Not Example(s) Drag appropriate answer(s) here