Answer:
(c) All three
Explanation:
Butterflies: Some species of butterflies, such as the Monarch butterfly, are known to be poisonous. Monarch butterflies accumulate toxins called cardenolides from the milkweed plants they consume during their larval stage. These toxins make them poisonous to predators.
Fish: There are numerous species of poisonous fish. For example, the pufferfish (fugu) contains tetrodotoxin, a potent neurotoxin. Other poisonous fish include stonefish and lionfish.
Frogs: Many species of frogs are poisonous. The poison dart frogs (family Dendrobatidae) are famous for their toxic skin secretions, which contain alkaloid toxins that can be lethal to predators.
Therefore, all three groups listed—butterflies, fish, and frogs—have poisonous species among them, making option (c) All three the correct answer.
