Which of the following, if true, most strengthens the argument? A. Among the animals that feed on color-changing spiders are a few species of bat, which find their prey through sound echoes. B. Certain animals that feed on color-changing spiders do so only sparingly in order to keep from ingesting harmful amounts of spider venom. C. Color-changing spiders possess color discrimination that is more acute than that of spiders that lack the ability to change color. D. Color-changing spiders spin webs that are readily seen by the predators of those spiders. E. The color discrimination of certain birds that feed on color-changing spiders is no more acute than that of human beings.