If I tell you a 12-legged furry purple animal with very tiny teeth sits on your shoulder currently and needs you to feed it immediately, this is an example of this symbolic
ability:

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.  

answer; basic psychology;

answer; ha,ha,ha, corn on the cop;

answer; you can turn right on a red signal (when posted);