Which sensory component is primarily affected by pheromones?

Pheromones primarily influence the olfactory system, as they are chemical signals that are detected through the sense of smell. Olfactory receptors are specialized neurons located in the nasal cavity that are responsible for identifying and transmitting information about odor molecules, including pheromones. These receptors play a crucial role in the detection of pheromones, which can communicate various types of information between individuals, such as reproductive status, territory, and social signaling.

The other sensory components do not process pheromones. Auditory sensors are involved in hearing sounds, visual receptors are responsible for processing light and color to form images, and tactile sensors detect physical touch and pressure. Therefore, the correct choice highlights the specific role of olfactory receptors in responding to pheromones, making them the primary sensory component affected by these chemical signals.