Why does the author mention "grasshopp...

Câu hỏi: Why does the author mention "grasshopper" in the last line? 

A To contrast animals that "flash" with animals that "freeze".

B As an example of an animal whose "flash" behaviour is a sound.

C To compare the jumping behaviour of insects and reptiles.

D As an example of a predator that moths escape by using "flash" behavior.