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Which of the following best completes the passage below?
Local visitors to nature reserves in South Africa often complain that foreign tourists on guided tours, despite their inexperience and lack of knowledge, manage to see rare animals more often than they do. Unlike in a zoo, the animals wander around to their hearts' content in a huge natural area, and there is never any guarantee that a visitor to such a reserve will see a specific type of animal. Although it is believed that the success of the foreign tourists is a result of "beginner's luck", what could actually explain this phenomenon is the fact that __________.
This answer choice cannot explain the paradox and therefore cannot logically complete the argument. If there are more animals in the nature reserves than it should be easier for local visitors and tourists to see them, but still only the tourists see them.
This answer contradicts one of the premises and therefore cannot logically complete the argument. If tourists and local visitors did not communicate, how would locals know how many rare animals the tourists saw?
This answer choice fails to resolve the paradox and therefore cannot logically complete the argument. More details about which types of animals are considered rare does not help explain why tourists see more of them than locals.
Since it explains the tourists' classification skills, this answer choice could explain how tourists recognize rare animals when they see them. However, it fails to explain the paradox at hand which is - why do tourists see more rare animals than locals? Therefore, it cannot logically complete the argument.
This answer choice logically resolves the paradox and completes the argument. If the tour guides are more knowledgeable than the average local visitor, it makes sense that they would be more successful at locating the rare animals and that their group of tourists will see more rare animals.