You can tell a cheetah by what pattern on its fur

The tail can also have up to 6 rings, followed by half-broken rings which appear as different patterns on both its sides and thus can be used as a prime identification pattern. The spots on cheetah face and chest are relatively small and are only well seen from a short distance.

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.