What is the most likely reason that a universal scheme for assessing the performance and potential of a country's economic environment does NOT exist?

What is the most likely reason that a universal scheme for assessing the performance and potential of a country's economic environment does NOT exist? 




A) difficulties of identifying a definitive set of predictive economic indicators
B) a lack of reliable economic data from most developed economies
C) the isolation of most markets from each other
D) static nature of the marketplace




Answer: A


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