From which embryonic structure does the external auditory canal originate?

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The upper portion of the first ectodermal pouchThe upper segment of the second branchial cleftThe upper area of the third ectodermal pouchThe sixth pharyngeal arch

Explanation

The external auditory meatus is derived from the dorsal region of the first ectodermal pouch. Other options such as the second cleft, third pouch, or sixth branchial arch do not contribute to its formation.