Respuesta :
"depletion of freshwater due to city growth" would be the best option from the list, since when large population growth occurs in very dry climates, it is often the water supply that suffers most.
If I was an environmentalist giving a speech about environmental concerns due to population growth in the western United States, the most important detail I would include is option C: depletion of freshwater due to city growth.
Water is not used efficiently, so it would be a really serious issue to deal with, if a population growth takes place and result in the depletion of water.
For instance, the scarcity of fresh water for agriculture may emerge as a more immediate problem. Almost one-fifth of the world’s population lives in areas where water is physically scarce, so that a rapid and increasingly population growth has given way to an enormous expansion of agriculture, which is now estimated to account for 92 percent of the world’s use of fresh water.