Enement apartments at the beginning of the twentieth century were

Tenement apartments in the beginning of 20th century were smaller and dangerous.

A tenement is multi-occupancy building of any sort, but particularly a run-down apartment building or slum building. In these apartments used to live people of an economic lower class. One apartment usually consisted of two or more living families and a lot of crime happened in this specific area.

B for Ed.

Explanation:

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services