It is called a river basin
The answer to the question presented above would be letter c. The IMF and the World Bank focus their efforts on promoting world trade. Both agencies focus on the development, economic self-sufficiency, and the currency problems of developing countries. It does not directly focus on promoting world trade.
2km is the same as 2000m which is the same as 200000 cm.
BUT don't make the same mistake as the other answer. This is 200000 cm per 100000 years. Divide 200000 by 100000 to get <em>2 cm per year.</em>
Hope this helps!