Fact 1: Most salamanders use their sense of smell to find a mate.

Fact 2: An odor, by definition, is a sensation, stimulation or perception of the sense of smell.

Given the two facts above, answer the question "Most salamanders find mates by what?" with the following options: 
- perceiving odors
 - Chemical energy
 - competing for resources
 - releasing colors
 - mechanical waves
 - during the day
 - spreading germs
 - sharing food


 

 perceiving odors        