Read the following passages and answer the questions given below. The WorkersA survey in 1842 revealed that the average lifespan of workers was lower than that of any other social group in cities: it was 15 years in Birmingham, 17 in Manchester, 21 in Derby. More people died, and died at a younger age, in the new industrial cities, than in the villages they had come from. Half the children failed to survive beyond the age of five. The increase in the population of cities was because of immigrants, rather than by an increase in the number of children born to families who already lived there.Deaths were primarily caused by epidemics of disease that sprang from the pollution of water, like cholera and typhoid, or of the air, like tuberculosis. More than 31,000 people died from an outbreak of cholera in 1832. Until late in the nineteenth century, municipal authorities were negligent in attending to these dangerous conditions of life. The medical knowledge to understand and cure these diseases was unknown. 1) When was the survey conducted?2) What was the average lifespan?3) What was the cause of the increase in population?4) What are the diseases mentioned here?5) Why were the municipal authorities negligent in attending to these diseases?