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.
They weren't as accurate as they could be, in fact some were just based off of educated guesses.
Siberia covers the majority of Russia
The lowland areas of Latin America are very important because of multiple reasons. The majority of the agriculture and farming of animals is taking place in the areas like this, so the food sector is directly connected with them. On top of the agricultural production, these lowlands produce a lot of food on their own. The industries that use as their main material also are directly dependent on these lowlands, as they are mostly covered with numerous types of high quality tropical tree species. There's thousands of species of plants that are used in the medicine, so the pharmacies are also very dependent on them. All in all, these lowlands managed to contribute a lot in the economy, health, and general well being of the Latin American countries.
