According to a recent study by JAMA, a correlation was found between people’s susceptibility to depression and the amount of chocolate they consumed, regardless of how old they were. What can we conclude from this study?

We can conclude that, the hifgher the number of chocolate eaten by people, they higher  the probability of them being susceptible to depression. This is irrespective of their individual age.

Explanation:

Scientist all over the world tends to carry out research experiment inorder to determine the effect of foods we eat to humans. This food could be processed or unprocessed.

The JAMA research on the effect of a processed food-chocolate and depression shows a strong correlation. Their study goes to show that people are susceptible to depression when they eat chocolate compare to people that didn't eat chocolate.

what are the events? you didnt list any

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.