The thorax is enclosed by the:
a. ribs, sternum, thoracic spine, and diaphragm.
b. ribs, clavicles, diaphragm, and mediastinum.
c. thoracic vertebrae, diaphragm, mediastinum, and clavicles.
d. clavicles, sternum, diaphragm, and thoracic spine.
Answer: a
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