47. What is the meaning of the clause “the conservation benefits zoos provide outweigh the isolated (albeit tragic) costs paid by the animals involved”? (A) Although zoos spend a lot in raising animals, they can earn more money from conservation. (B) In spite of the miserable deaths of some animals in zoos, they still profit more from conservation. (C) In spite of some sad deaths of animals in zoos, their contribution to conservation surpasses the loss. (D) Although zoos have to pay for conserving animals, they are still getting a lot more money from the business.