The years 1917, 1937, 1956, 1968, 1979, and 1990 are all notable for the occurrence of both popular uprisings and near-maximum sunspot activity. During heavy sunspot activity, there is a sharp rise in positively charged ions in the air people breathe, and positively charged ions are known to make people anxious and irritable. Ttherefore, it is likely that sunspot activity has actually been a factor in triggering popular uprisings. Which one of the following exhibits a pattern of reasoning most similar to that in the passage? ['The ancient Greeks sometimes attempted to predict the outcome of future events by watching the flight patterns of birds. Since the events themselves often matched the predictions, the birds were probably responding to some factor that also influenced the events.', "The thirty healthiest people in a long-term medical study turned out to be the same thirty whose regular diets included the most vegetables. Since specific substances in vegetables are known to help the body fight disease, vegetables should be part of everyone's diet.", "Martha, Sidney, and Hilary are the city's three most powerful politicians, and all three graduated from Ridgeview High School. Although Ridgeview never had a reputation for excellence, it must have been a good school to have produced three such successful graduates.", "Acme's most productive managers are consistently those who occupy the corner offices, which have more windows than other offices at Acme. Since people are more alert when they are exposed to abundant natural light, the greater productivity of these managers is probably at least in part a result of their working in the corner offices."]