Research Process 8: Question 6 Which source is most relevant to answer the research question below? Research Question: Does eliminating vending machines in schools improve student health? Select one: A research study published in 1967 showing the increased health benefits that students receive when eating school lunches. A case study comparing two middle schools that eliminated vending machines and collected data on student health. An interview with a dermatologist about the increase in acne among teens who eat a high-fat and high-sugar diet. A website that allows students to express their personal opinions on a variety of topics, including vending machines in schools.