Question

1 when you get a concussion, the hard bone of the cranium:
a helps limit the severity of the injury
b is part of what causes the damage
c keeps the brain immobile
d releases layers of protective fluid

Explanation:

A concussion occurs when the brain moves rapidly within the skull. The hard bone of the cranium (skull) can contribute to the damage. When the head is jolted (e.g., in a fall or collision), the brain can slam against the inside of the skull. The skull's rigidity and the force of the impact can cause bruising (contusion) or other types of injury to the brain tissue.

• Option A: The cranium does not "help limit" the severity in the sense that it is part of what can cause harm during a concussion (due to the brain hitting it), so this is incorrect.
• Option C: The brain is not "kept immobile" by the cranium. In fact, during a concussion - causing event, the brain moves relative to the cranium, so this is wrong.
• Option D: The cranium does not "release" protective fluid. Cerebrospinal fluid (a protective fluid) is already present around the brain and spinal cord, produced by structures within the brain (like the choroid plexus), not the cranium.

Answer:

B. Is part of what causes the damage