- A Sixth
- B Fourth
- C Fifth
- D Second
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Answer:
C
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he trachea is a long tube-like structure that starts at the larynx and extends down to the mid-thoracic cavity, where it divides into two bronchi. The trachea divides at the fifth thoracic vertebra into left and right bronchi. This branching of the trachea is the first division of the respiratory system. Therefore, option C is the correct answer to this question. The other options (sixth, fourth, and second) are incorrect as the trachea does not branch at these thoracic vertebrae.
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