Question

which of the following was a common problem in tenement buildings in the early 1900s?
indoor plumbing that went on and off constantly
poor ventilation due to the lack of windows
rooms that were too bright due to little shade
large rooms that were too open and needed dividers

Explanation:

Tenement buildings in the early 1900s were often over - crowded and poorly constructed. They typically had poor ventilation because of a lack of windows to maximize the number of living spaces. Indoor plumbing was often non - existent or very basic, not on and off constantly. Rooms were not too bright due to little shade as buildings were packed closely together, and they did not have large open rooms needing dividers but rather small, cramped spaces.

Answer:

poor ventilation due to the lack of windows