You are presented with the question "What can have a more complex nervous system?" and the following answer choices: 
- a fish
 - Birds
 - insects
 - coral
 - the Sun
 - ducks
 - rocks
 - air molecules

Now knowing that most invertebrates have a more complex nervous system and corals, and invertebrates in general, are delicate creatures, choose the best answer.


 

    coral     