A 6-year-old male was thrown 10 feet after he was struck by a car. He complains of neck and back pain. The skin on his face, shoulders, and arms is pale and diaphoretic. He has no feeling below his nipple line, and his skin is warm and pink. You should suspect an injury to his:
a) Spinal cord
b) Ribs
c) Muscles
d) Ligaments