A frog species that lives in a particular ecosystem is brightly colored and secretes toxins from its skin. There is a large population of a second frog species, which is nonpoisonous but has the same color, similar markings, and lives in the same type of ecosystem. Which of the following best explains what conditions would have caused the large population of the nonpoisonous frog to arise over time? A) The nonpoisonous frogs were able to adapt to look like poisonous frogs when predators approached, and thus predators avoided them.
B) The nonpoisonous frogs were mistaken by predators as poisonous and weren't preyed upon, allowing them to survive and reproduce.
C) The poisonous frogs mated with the nonpoisonous frogs and transferred traits that helped them avoid predators.
D) The toxins produced by the poisonous frogs did not affect other frog species, enabling the nonpoisonous frogs to prey upon them.