Question

the working conditions in those days were so horrible it would stagger your imagination. death was our constant companion... malaria with all its horrible meaning those days was just a household word. i saw mosquitoes... by the thousands attack one man. there were days that we could only work a few hours because of high fever racking our bodies... alfred dottin
which describes dottins experience when constructing the panama canal?
the workers went on strike demanding shorter work days
the housing provided to construction workers was overcrowded
the conflict between panamanians and the united states turned violent
the construction slowed down because diseases spread and killed workers

Explanation:

The text mentions "malaria" and "high fever" which are diseases. It also says construction was slow - ed because diseases spread and killed workers. The other options (workers' strike for shorter days, housing overcrowding, conflict between Panamanians and US turning violent) are not supported by the description of Dottin's experience focusing on disease - related issues.

Answer:

The construction slowed down because diseases spread and killed workers.