Answer
a. the crista galli
Work Step by Step
The crista galli is the median ridge on the cribriform plate, which forms the roof of the nasal cavity, of the ethmoid bone. You cannot palpate this location on a living person.
The mastoid process, zygomatic arch, superioor nuchal line, and hyoid bone are all superficially located and can all be easily palpated on a living person.
