I believe the answer is descriptive research
Descriptive research is a form of research that conducted in order to spot/find out the characteristics of certain phenomenon.
This type of research does not necessarily aim to identify the cause or the solution of the phenomenon
A psychologist who embraces the cognitive perspective would be most interested in cognitive psychology. It is an area that focuses on the mental processes. It emphasizes perception, memory, thinking, and recalling. It also includes the way we learn, the way we acquire and use language.
Answer:
I would, personally guess D. I hope it's right!!
The first instance of the Ottomans having to rule a large number of Christians was after the conquest of Constantinople by Sultan Mehmed II in 1453. Constantinople had historically been the center of the Orthodox Christian world, and still had a large Christian population. As the empire grew into Europe, more and more non-Muslims came under Ottoman authority. For example, in the 1530s, over 80% of the population in Ottoman Europe was not Muslim. In order to deal with these new Ottoman subjects, Mehmed instituted a new system, later called the millet system. Hope this helps!
On the one hand, railroad companies built tracks that attracted settlers and they advertised the rich farmland of the area throughout the country. Likewise, they sold parcels of land to farmers at very inexpensive prices. On the other hand, thanks to the railroad, farmers were able to ship their goods to the rest of the country more easily and reliably, faster and at a lower cost.