What is one reason a political leader might engineer a famine? To get credit later for ending the famine.
As an experiment.
To weaken a region they want political control over.
To lower the cost of food.

To weaken a region they want political control over

Explanation:

Take the Ukraine Famine for example. The dreadful famine that engulfed Ukraine, the northern Caucasus, and the lower Volga River area in 1932–1933 was the result of Joseph Stalin's policy of forced collectivization. Stalin was determined to crush all vestiges of Ukrainian nationalism.

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; all over the above; //everybody