In development, Eustachian tube is

Options :
  1. ectodermal
  2. endodermal
  3. mesodermal
  4. both mesodermal and endodermal
Answer and Explanation :-

Answer: Option 2

Explanation:

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Because that was the point, wasn't it? You had to choose. You might be right, you might be wrong but you had to choose, knowing that the rightness or wrongness might never be clear or even that you were deciding between sorts of wrong, that there was no right anywhere. And always, always, you did it by yourself. (Carpe Jugulum)
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