Answer: C. Swift argues that his proposal would increase the circulation of money and strengthen England’s economy.
In these lines, Swift argues that his proposal will likely increase the circulation of money in England and strengthen the economy. On the one hand, Swift argues that his proposal would save the country a lot of money that would not be spent raising children. Moreover, the new dishes that would be created would bring money to those who serve it. Finally, the "goods" (the children) would be of their own "manufacture," which means that the country would rely on its own production.