Read the paragraph below and answer the following question. (1) The size of the obesity epidemic is not the only reason that this crisis cannot be ignored.(2) The adverse effects of obesity are widespread and relate not only to individuals, but to society as a whole. (3) The medical consequences of obesity are well documented and include increased risk of type -2 diabetes, heart disease, hypertension, stroke and several cancers. (4) The large amount of excess weight that characterises obesity can also lead to sleep apnoea and osteoarthritis. (5) Both of these conditions have the potential to seriously reduce the quality and enjoyment of life of an individual. (6) In addition, obesity has been shown to substantially reduce life expectancy, especially in young adults. (7) Already some areas of the United States have seen decreases in life expectancy, with obesity a contributing factor. (8) We do not want to see this trend continue across the globe, undoing the gains we have made in the last hundred years in areas of health and life expectancy. Adapted from student sample with permission. Which sentences contain information from a source and therefore need to be referenced? Select all that apply.多项选择题