C
A geological engineer is a profession that plans and designs structures that are critically affected by geological factors of the earth's crust such as underground water, gradient, rocks and soil, and etcetera.
Explanation:
This kind of engineer is knowledgeable on how to harness the natural gradient of the landscape geography of the region to supply water to the city mainly by gravity. This reduces the power required to pump the water hence reducing the carbon footprint. The engineer also provides the most efficient and least costly way to supply water in the safest way possible.
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