Most salamanders use their sense of smell to find a mate.
An odor, by definition, is a sensation, stimulation or perception of the sense of smell.
Most salamanders find mates by perceiving odors.
Most salamanders find mates by what?

(A) perceiving odors
(B) Chemical energy
(C) competing for resources
(D) releasing colors
(E) mechanical waves
(F) during the day
(G) spreading germs
(H) sharing food