Answer:
D. It provides reasons that the architecture should be preserved.
Step-by-step explanation:
The second paragraph refines the idea that it's important to protect historically significant architecture by providing the reasons that the architecture should be preserved.
The excerpt reveals that if the new is taken out, the old will be totally lost and forgotten. The author reveals that as a result of embracing the new and forgetting the old, people no longer appreciate history and the artistic integrity of the country's oldest buildings. Also, people neglect the ornamentation and woodwork that go into these old buildings. So, these are some of the reasons that the author gives in order to support the preservation of architecture.