Final answer:
The shape of the nasal cavity is not typically used to determine the sex of a skeleton; instead, the shape of the jaw, eye orbits, and forehead are used due to their sex-specific characteristics.
Step-by-step explanation:
Among the features you mentioned, the shape of the nasal cavity is not typically used to determine the sex of a skeleton. Knowledge of human skeletal anatomy shows that the shape of jaw, shape of eye orbit, and shape of forehead can exhibit sex-specific characteristics that forensic anthropologists and archaeologists might use to establish whether a skull belongs to a male or female. For example, males usually have squarer eye orbits and more pronounced brow ridges, while females often have rounder orbits and smoother foreheads. However, the shape of the nasal cavity does not provide clear, sex-distinctive features and is therefore not reliable for sex determination.