What is the most suitable mode of transportation for you to transport a batch of wood from Chongqing to Shanghai? There are roads, railways, waterways and aviation.

The mode of transportation should be selected according to the nature, quantity, distance, price and time limit of the goods. Generally speaking, most expensive or urgently needed goods are transported by air. Live animals or fresh commodities that are prone to death and deterioration can be transported by road in short distance, and special railway vehicles can be used in large quantities in long distance; Bulk and bulky goods are transported by water or railway as far as possible. Therefore, there are100000 tons of grain from Chongqing to Shanghai, and the most reasonable mode of transportation is river transportation along the Yangtze River.

So choose: a.