Which choice best reflects the overall sequence of events in the passage?

An experiment is proposed but proves unworkable; a less ambitious experiment is attempted, and it yields data that give rise to a new set of questions.

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A new discovery leads to reconsideration of a theory; a classic study is adapted, and the results are summarized.

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An anomaly is observed and simulated experimentally; the results are compared with previous findings, and a novel hypothesis is proposed.

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An unexpected finding arises during the early phase of a study; the study is modified in response to this finding, and the results are interpreted and evaluated.

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Solution

The correct option is D An unexpected finding arises during the early phase of a study; the study is modified in response to this finding, and the results are interpreted and evaluated.
In this passage, the writer first states that a bird's ability to fly has always been a much debated topic among scientists. Then goes on to explain that Ken Dial created an experiment to study the evolution of flight by observing how baby Chukars learn to fly when a group of students challenged him to come up with new data on this much debated topic. During the experiment, Dial noticed the unusual way baby Chukars "were using their wings and legs cooperatively" to climb hay bales. After this, he created a series of experiments to study this observation he had made. After he conducted these experiments, Dial came to the conclusion that Dial determined that these baby birds "angled their wings differently from birds in flight". This sequence of events best befits option D. The other options do not describe the sequence of events as well.

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