What evidence does the author give to show that prehistoric belemnites used the same kind of defense against predators that modern cephalopods use?
A) Mary discovered that bezoar stones were sometimes found in the abdominal region of belemnites.
B) Mary found fossilized fish bones and scales inside both belemnites and cephalopods.
C) Mary discovered a chamber containing ink inside a belemnite fossil, resembling the ink sacs of modern squids.
D) Mary discovered that both creatures have the same kinds of claws that emit poison.
The correct answer is C) Mary discovered a chamber containing ink inside a belemnite fossil, resembling the ink sacs of modern squids.
Explanation: This evidence indicates that prehistoric belemnites, like modern cephalopods, used ink as a form of defense against predators. Modern squids and octopuses release ink to create a smokescreen that allows them to escape from threats, suggesting that belemnites employed a similar strategy for protection.