GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - QZ5C56M7ZB575PGSJ

The "second possibility" implies which of the following as a possible explanation for the female long-tailed skinks that failed to home from distances over 50 meters? A. They had relatively small clutches. B. They were unable to find their way home. C. They lacked sufficient energy to home successfully. D. They had male long-tailed skinks guarding their clutches. E. They detected evidence of egg-eating snakes In the vicinity of their nests.