Studying animals in a laboratory allows variables to be systematically controlled, but removing animals from their wild habitats can affect their behavior and biology in unforeseen ways. Given this, biologists Rebecca M. Calisi-Rodríguez and George E. Bentley examined research on brown-throated three-toed sloths and white-throated sparrows to see whether results from studies in the wild were consistent with the results of studies in the laboratory. Therefore, data showing that brown-throated three-toed sloths tend to sleep fewer than 10 hours per day in the wild would be irrelevant to Calisi-Rodríguez and Bentley's investigation if _____
Which choice most logically completes the text?
A. they tend to sleep more than 15 hours per day in the lab.
B. white-throated sparrows have low levels of corticosterone hormones outside of the breeding season in the wild.
C. this behavior pattern has not been studied in the lab.
D. such data have been collected for white-throated sparrows in laboratory settings but not in the wild.
文本翻译
在实验室中研究动物可以系统地控制变量，但将动物从野生栖息地中移除可能会以无法预见的方式影响它们的行为和生物学特性。鉴于此，生物学家 Rebecca M. Calisi-Rodríguez 和 George E. Bentley 研究了褐喉三趾树蛙和白喉带鹀的相关研究，以探究野生环境下的研究结果是否与实验室研究的结果一致。因此，如果 _____ ，那么关于褐喉三趾树蛙在野外每天睡眠时间通常少于 10 小时的数据，就与 Calisi-Rodríguez 和 Bentley 的研究无关。
文本分析
两位生物学家的研究目的是比较野生环境与实验室环境下的研究结果是否一致。研究对象包括褐喉三趾树蛙和白喉带鹀。
题干指出，树蛙在野外每天睡少于10小时的数据如果与研究无关，则意味着这一数据无法服务于“比较野生与实验室结果是否一致”的目的。
比较的前提是同一行为在野生和实验室两种条件下都曾被研究过。如果实验室中从未研究过树蛙的睡眠时长，那么野生数据没有对照基准，无法判断是否一致，因此与研究无关。
选项分析
A. they tend to sleep more than 15 hours per day in the lab.
错误，这提供了实验室数据，可以与野生数据进行比较，反而与研究相关。
B. white-throated sparrows have low levels of corticosterone hormones outside of the breeding season in the wild.
错误，讨论的是另一种动物和另一个指标，与树蛙睡眠时长无关，不能逻辑补全。
C. this behavior pattern has not been studied in the lab.
正确，如果实验室从未研究过树蛙的睡眠时长，则野生数据没有可比对象，无法判断一致性，因此与研究无关。
D. such data have been collected for white-throated sparrows in laboratory settings but not in the wild.
错误，题干数据是关于树蛙的，而此选项讨论的是白喉带鹀，两者无关。
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