The correct answer is known as "Centration".
Centration is described as the tendency to cognizance on one salient thing of a state of affairs and forget different, possibly applicable elements. added with the aid of the Swiss psychologist Jean Piaget through her cognitive-developmental stage concept, centration is a conduct often established inside the pre-operational stage.
It is traditional for families to clean their houses and the areas surrounding before the start of the new year. The word 'dust' in Chinese is a homophone for 'old', thus cleaning the house is symbolic of driving away the bad luck of the previous year to allow for a new start.
what kind of question is that?
An influx of people meant the risk of overcrowding, which in turn meant that cities often didn’t have enough space to accommodate everyone. People living in close quarters without proper hygiene + newly or poorly developed sanitation systems = disease.
