You are presented with the question "What communicates with subtle scents?" and the following answer choices: 
- bears
 - viruses
 - bacteria
 - Birds
 - bats
 - ants
 - koalas
 - phytoplankton

Now knowing that ants communicate with chemicals called pheromones and pheromones are subtle scents emitted by animals in mating season, choose the best answer.


 

      ants   