What enables the survival of a species

Depending on the animal type some animals have instincts that have from birth (such as a deer knowing how to walk right after being born), and some learn  their survival skills as they grow and develop (such as a bird learning how to fly after a while of growing).

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