Question 1. The correct answer is option C. "Postmodern theory". Sarah's idea that there are not absolutes and reality is multifaceted agrees with postmodern theory, since postmodernist main premise is that no definite terms, boundaries, or absolute truths exist.
Question 2. The correct answer is option C. "Survey". Survey is the most appropiate tool to understand the average opinion of a segment of the population by gathering information of the answered questions. In this case, the sociologist would design a survey on health insurance opinon and American workers would be the segment of the population that will answer it.