What were some adavantages of living in a city at the end of the 19th century

The population of U.S. cities tripled between 1870 and 1900 because of the advantages perceived to come from living in the city, including modern conveniences, such as indoor plumbing and the telephone, higher salaries, increased job opportunities and greater opportunities for amusement. However, city life in the 1800s also often came with overstressed sewage systems, rapidly spreading disease and squalid living conditions.

The right answer would be a