Ulie usually wakes up very tired each morning, but she wants to improve her ability to function during the day. she decides that she will go to sleep an hour earlier than usual from now on. the first night, she has trouble falling asleep, and when she wakes up tired, she abandons her plan.

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.