Dr. Wiley asks students to look at real-world problems related to political science, instead of reading and studying textbooks and note cards with definitions. This is because Dr. Wiley is familiar with the research on memory and understands that:

With memory we can remember and understand things in a better way or recall an event more better.

Explanation:

Dr Wiley with the research of memory understand that we can remember an event in a better view through memory, which we can connect with the brain then with knowledge, we recall things that we have forgotten, because its more visual and realistic than reading of textbooks that might seem fictional.

Memory connected to real life world experience is remembered  better because these type of knowledge it  is stored in the part of the brain where memory is easily recalled.

the minoan civilization flourished in the middle bronze age on the island of crete located in the eastern mediterranean from c. 2000 bce until c. 1500 bce. with their unique art and architecture, and the spread of their ideas through contact with other cultures across the aegean, the minoans made a significant contribution to the development of western european civilization as it is known today. labyrinth-like palace complexes, vivid frescoes depicting scenes such as bull-leaping and processions, fine gold jewelry, elegant stone vases, and pottery with vibrant decorations of marine life are all particular features of minoan crete.  

so basically their unique way of ding arts, as well as architecture.

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.