Final answer:
Neurons that use binaural differences in loudness as a cue to the source of a click are located within the superior olivary complex.
Step-by-step explanation:
The neurons that use binaural differences in loudness as a cue to the source of a click are located within the superior olivary complex. This complex is part of the auditory pathway in the brainstem and is responsible for processing sound location information by comparing the information arriving at both ears.