Answer:
Among the options given on the question the correct answer is option C.
Lower class.
Explanation: During the nineteenth century people from around the different parts of the world started to gather in the cities of America i n quest of opportunities and better life than the life they lived in previous place. This tendency made a massive increase in the population of the USA. As a result the need for houses to live arose extremely.
To meet up these needs the tenement house arose. The tenement houses were narrow and low rise building which were once been single-family dwellings were increasingly divided into multiple living spaces to accommodate this growing population.These tenement houses were the main source of the accommodation for the newly arrived immigrated people. Known as tenements, these narrow, low-rise apartment buildings–many of them concentrated in the city’s Lower East Side neighborhood–were all too often cramped, poorly lit and lacked indoor plumbing and proper ventilation
Therefore,it can be said that the people who used to live in the tenement house during the 19th and 20th century were lower class.