Recent trends in public transportation systems in the United States has been to invest in and expand subways and light rail systems in the largest cities..
shift public money for education to investment in railroads.
encourage carpools and the creation of carpool lanes on highways.
place less restriction on Uber and Lyft operators.
continue improving highways, bridges, and airports.

buildings

explanation:

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

for your question the answer would have to be france