16. George Bernard Shaw wrote: “That any sane nation, having observed that you could provide for the supply of bread by giving bakers a pecuniary interest in baking for you, should go on to give a surgeon a pecuniary interest in cutting off your leg is enough to make one despair of political humanity.”
Shaw’s statement would best serve as an illustration in an argument criticizing which of the following?
(A) Dentists who perform unnecessary dental work in order to earn a profit
(B) Doctors who increase their profits by specializing only in diseases that affect a large percentage of the population
(C) Grocers who raise the price of food in order to increase their profit margins
(D) Oil companies that decrease the price of their oil in order to increase their market share
(E) Bakers and surgeons who earn a profit by supplying other peoples’ basic needs
A是答案，这题以前讨论过，可我还是没有明白原文想说什么
A中的是unnecessary dental work ，可是原文中的leg 也没说是否应该cutting off ，如果本来就是就应该截肢的那为什么不该give a surgeon a pecuniary interest（医生手术不应该付费吗？）文中的despair of political humanity又是指什么？
thanks a lot in advance | 
