Systems Model Which of the following systems model concepts describes social, economic, physical, or other sets of variables that are external to a political system but affect its operation> a. environments b. inputs structures c. outputs d. feedback Which of the following systems model concepts describes authoritative decisions and actions (generally thought of as benefits or deprivations)? a. environments b. inputs structures c. outputs d. feedback According to systems model terminology, which of the following would be an example of a conversion structure? a. the Republican Party b. the National Rifle Association c. the news media d. the United States Congress According to systems model terminology, the “channels, linkages, and connections from the environments to governmental institutions” are known as a. input structures b. feedback c. outputs d. conversion structures