What is the likely phylogenetic explanation for the crossing of food and air pathways in humans?
A) A connection between the two previously separated pathways evolved to allow for an alternative air intake in case of a "stuffy nose."
B) Lungs evolved as an extension of the esophagus rather than as a separate organ system.
C) Access to odor receptors in the nose allowed for assessing food quality before swallowing.
D) A connection between both pathways allowed for a more efficient swallowing mechanism.
Correct Answer:
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