Question

understanding historical texts — instructio
buildings they owned to other nearby towns.
most of the buildings were torn down and
burned. even the trees were removed.

next, the land for the reservoir had to be cleaned to keep
the future drinking water safe. many
that time had outdoor toilets with no reservoirs
removed.

at
were

homes
rivers

Explanation:

The context discusses preparing land for a reservoir by removing structures that could contaminate drinking water. Outdoor toilets are associated with residential properties, so "homes" is the only option that logically fits the sentence about removing sources of potential contamination.

Answer:

homes