Because of the expenses of living in the cities and the drug usage.
The production of crops and farm animals for sale, usually with the use of modern technology: commercial farming methods.
Answer:
True I think so. grhdjjjdjdjhdhdh
In urban areas, there are more people, therefore not a lot of farmland. (that eliminates C) If city buildings don't allow flood waters to recede, that could be dangerous in many ways. (So A is still a reasonable answer) If most cities are built in flood zones, there should be some form of shelter if houses aren't safe. Pollutants and diseases being carried in water are already dangerous, but easier to spread with rapid flood waters that are sweeping everywhere. So your best answer would be either A or B.
