Since article mentioned is not given, I can only give you a hint to the solution.
You should see over a period of time the changes in consumption, investment, government expenditure and net exports. To find causes behind these policies refer to government policies like fiscal policies, monetary policies etc. An economy where consumption is more is good at present but will not be able to keep pace of economic growth in long term very high. You should also consider labour laws, inequalities of income while reviewing the facts.
Journal Instructions Critical Thinking Assignment #2 This week you will look at real data for the components of GDP...