Answer:
Among the options given on the question the correct answer is option A.
Crowded,unsanitary living conditions in tenements.
Explanation: During the early 1900s , there was a flow of migrated people from different place of world. Those people were in search of opportunity and better life from which they had in their previous place. Moreover, the people those who lived in the rural areas of America they also started to gather in the urban areas of America in search better opportunities.
As a result the population in urban areas increased rapidly and the need of accommodation was at it's highest. At this time the tenements house expressed as the suitable accommodation for these migrated lower and lower middle class. This tenement houses were low in heights and tiny.Moreover, there was lack of ventilation which made these housed suffocated. On the other hand , there was lack of sanitary which a health issue.
For these reason, the urban Americans faced crowded, unsanitary living conditions in tenements.
