You are presented with the question "What use pheromones to communicate with each other?" and the following answer choices: 
- passenger pigeons
 - honeybees
 - deuterostomes
 - Most plants
 - insects
 - animals
 - huddle together
 - orchids

Now knowing that echinoderms use pheromones to communicate with each other and all echinoderms are deuterostomes , choose the best answer.


 

   deuterostomes      