How many gracile australopithecines are recognized?

The recognition of gracile australopithecines is based on the classification of several species within the genus Australopithecus. Gracile australopithecines are characterized by their lighter, more slender build compared to their robust counterparts. The primary gracile species that are widely recognized include Australopithecus afarensis, Australopithecus africanus, and in some classifications, Australopithecus anamensis.

Thus, the correct distinction being made here is that there are generally three well-recognized species of gracile australopithecines. This classification reflects the current understanding of hominin evolution and the significance of these species in providing insight into the early stages of human development. The term "gracile" specifically applies to these species, highlighting their anatomical traits that differentiate them from the more robust australopithecines.