The correct options are
B Hydrogen peroxide
C Hydroquinone
∙ Animal intelligence can be seen through their activities. Some animals like tasmanian devil and bombardier beetle protect themselves from predators by spreading bad smell throughout their body.
∙ Bombardier beetle has chemicals like hydroquinone and hydrogen peroxide stored in its body. Whenever it feels threatened, these chemicals mix up with some special enzymes and release foul smell.