What evidence would be most useful in differentiating between the remains of australopithecus afarensis and homo habilis? a. structure of the pelvis b. position of the foramen magnum c. size of the braincase d. skeletal evidence would not be useful in differentiating between the two.

The correct answer for the question above is letter c. If you compare the braincase of australopithecus afarensis and homo habilis, homo habilis have greater size than australopithecus afarensis. Therefore, the size of the braincase is the most useful evidence in differentiating between the remains of australopithecus afarensis and homo habilis.