GRE课程
Spiders of many species change color to resemble the color of the flowers they sit on. Many animals that prey on such spiders possess color discrimination so acute that they, unlike human beings, can readily see the spiders despite the seeming camouflage. It is unlikely, therefore, that the spiders' color changes confer significant survival benefit on these spiders.
Which of the following would it be most useful to determine in order to evaluate the argument?
Whether the spiders' own ability to discriminate color-camouflaged species is as acute as that of their predators
Whether the spiders have a color that could properly be regarded as their natural color
Whether the spiders' color-changes allow them to remain undetected by prey
Whether different species of color-changing spiders tend to favor different species of flower
Whether the color-changing spiders prey on any insects that themselves change color
Select one answer choice.
