B is the answer to this question
Answer:
b. Very little historic landmarks exist there because of fires set in World War II
Explanation:
Vienna is considered as one of the most beautiful cities in the world. It is a city with long tradition of being a cultural center as the city was just packed with great minds from all fields. That also led to building of very beautiful architecture. The World War II was threat, but Vienna was not badly affected by it, and the city managed to preserve its historic landmarks. It is actually one of the best preserved cities in the world when it comes to old architecture, and there has been lot of effort put in it. It is no wonder that it is the capital of Austria, still is seen as a cultural center, and being one of the most attractive cities to visit in the world.
Rotational slumping is a form of mass movement and occurs on coasts mainly. It involves a large area of land moving down a slope (obviously). Due to the nature of the slip, it leaves behind a curved surface. It’s very common on clay cliffs, during dry weather the clay contacts and cracks. When it rains, the water falls into the cracks and is absorbed until the rock is saturated. It weakens the rock and die to gravity, it slips down the slope on its slip plane.
Answer:Disadvantages
It is less precise compared to other advanced methods of surveying.
It is easily subjected to various errors such as errors adjoining magnetic meridian, local attraction etc.
Imperfect sighting of the ranging rods and inaccurate leveling also causes error.
ADVANTAGES: Does not require any electrical power to function (except for night illumination), therefore is not affected by the loss of power. Tends to be more stable than a fluxgate compass. Usually, the bigger the compass card diameter on a magnetic compass, the more stable, (and also the easier to read)