Which of the following ants are known to have one node?

The carpenter ant is known to have one node between its thorax and abdomen, which is a key identifying characteristic. This structural feature is often used to differentiate it from other ant species that possess two nodes. Meanwhile, the other ant species named in the options—such as the red imported fire ant and the pavement ant—are typically characterized by having two nodes. The physical traits of ants, including the number of nodes, are essential for proper identification, which is important in pest control and understanding the behavior of different ant species.