The correct answer is - B) Providing a cash based income for local citizens.
By developing the production of bamboo, and also constantly increasing it, the main goal is the providing of cash based income for local citizens. The bamboo is highly demanded, as it can be used for multiple things, and also its price is reasonable. With the ever growing popularity of the bamboo, the production also increases, and lot of people in East Asia increase their incomes because of the trade of the bamboo. It is a simple method of encouraging people to stay in the rural areas, and also a very effective one, as the areas will not be depopulated, the people have larger and stable incomes, and the governments profit as well.