Respuesta :
Answer: D: Turn something really good into something totally worthless
Explanation: "Learning would spoil the best slave in the world" We know slaves were used to do peoples' bidding and such. Being the "best" slave is doing nothing but obeying what you're being told. If the slave were to learn more than just obey, it would "spoil" how good the slave is obeying his or her master's orders.