Analyzing Style, Tone, Audience, and Point of View in Natural Science Passages - GMAT Verbal

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Adapted from “Birds in Retreat” in “Animal Defences—Active Defence” in Volume Four of The Natural History of Animals: The Animal Life of the World in Its Various Aspects and Relations by James Richard Ainsworth Davis (1903)

Among the large running birds are forms, like the African ostrich, in which the absence of powers of flight is largely compensated by the specialization of the legs for the purpose of rapid movement on the ground. For straightforward retreat in open country nothing could be more effective; but another kind of adaptation is required in birds like rails, which are deficient in powers of flight, and yet are able to run through thickly-growing vegetation with such rapidity as to commonly elude their enemies. This is rendered possible by the shape of their bodies, which are relatively narrow and flattened from side to side, so as to easily slip between the stems of grasses, rushes, and similar plants. Anyone who has pursued our native land-rail or corn-crake with intent to capture will have noted how extremely difficult it is even to get within sight of a bird of this sort.

Certain birds, unfortunately for themselves, have lost the power of flight without correspondingly increased powers of running, and have paid the penalty of extinction. Such an arrangement, as might be anticipated, was the result of evolution in islands devoid of any predatory ground-animals, and a classic example of it is afforded by the dodo and its allies, birds related to the pigeons. The dodo itself was a large and clumsy-looking species that at one time abounded in the island of Mauritius, which, like oceanic islands generally, possessed no native mammals, while its indigenous reptiles were only represented by lizards. The ubiquitous sailor, however, and the animals (especially swine) which he introduced, brought about the extinction of this helpless bird in less than a century after its first discovery in 1598. Its memory is now only kept green by a few contemporary drawings and descriptions, certain museum remains, and the proverb "as extinct as a dodo.” A similar fate must overtake any organism suddenly exposed to new and unfavorable conditions, if devoid of sufficient plasticity to rapidly accommodate itself to the altered environment.

Which of the following best describes the tone the author employs throughout the passage?

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Answer

The author’s tone throughout the passage may not stick out as you are reading it. Even though he discusses the extinction of the dodo, he relates the events without being emotional about them, and ends with a scientific principle about how this can happen to other species. Thus, we cannot say that he is “oversensitive” about these issues or any others, or similarly, that he is “despondent” (feeling hopeless, pessimistic, and sad) or “furious” (extremely angry) about the dodo’s extinction. Nothing in the passage suggests that the author’s tone is “carefree” either, as he obviously thinks the dodo’s extinction is an important example of what can happen when a species cannot adapt fast enough to a too-quickly-changing environment. This leaves us with one answer, the correct one: “None of the other answers.”

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