How many ant species are commonly encountered?

The correct answer reflects the fact that there are approximately nine ant species that are commonly encountered in many regions, including urban and suburban environments. This number accounts for a variety of ants that often interact with humans, such as carpenter ants, fire ants, and pavement ants, among others.

Understanding the common ant species is crucial for pest control professionals, as it enables them to identify and manage infestations effectively. Recognizing these species helps in applying the appropriate control methods and preventing further issues. While there may be more than nine species in total, focusing on the most prevalent ones provides a practical framework for pest management efforts. The options indicating lower or higher numbers do not encompass the commonly reported ant species effectively, which is why they are not the correct choice.