The correct answer is - C. It gave the Ottomans a trading center and a governmental and cultural capital.
Constantinople was one of the biggest and most important city in the Eastern part of Europe. It was a city with excellent location, great reputation, great influence, cultural center, and it was also a beautiful city. The Ottomans were impressed by it when they conquered it, and unlike their usual ways of destroying what stands on their way or fell in their hands, they didn't do any damage to the city after it fell under their rule, and they just made it even more beautiful. It was a city that became their capital, as well as the most important port, and cultural and political center of their empire.
