Correct answer should be A. :)
Answer:
- Constructing a dome within another dome
Explanation:
The dome that covers the Florence cathedral (the church of Santa Maria del Fiore) is known as Filippo Brunelleschi’s dome.
When it was designed, it was the largest dome in the world.
This immediately created problems as its size prevented the traditional method of construction. Its structure is a double shell supported by sturdy pillars.
Benefits, as a result of the BNM method, include a significant reduction in ambient air pollution, thereby reducing environmental and health impacts. A decreased use of coal leads to considerable cost savings, fires last longer and are ready for cooking much sooner.
Answer:
B is a good answer to me but I'm afraid I don't have any other options