Canals and aqueducts allow humans to
a. conserve water supplies
b. produce hydroelectricity
c. settle below river level
d. transport people and goods

Option: d. transport people and goods

Explanation:

Canals and aqueducts allow people to move one place to another. Canals are artificial (man-made) waterways built for transporting goods, and irrigation purposes. Canals play a key role in shortening the distances of voyages. Aqueducts are used to transport fresh water in the cities and heavily populated areas. During the Roman Empire aqueducts played a crucial role in bringing water into the main cities. Some famous aqueducts are Pont du Gard, Acqua Vergine and so on.

1."lessen the worth of ."

2."increase the worth of."

3." beyond the worth of."

4."against the worth of ."