Q: In humans, pharyngeal slits later develop into what?


Read this paragraph and choose the correct option from the provided answers:

In some chordates, all four traits persist throughout life and serve important functions. However, in many chordates, including humans, all four traits are present only during the embryonic stage. After that, some of the traits disappear or develop into other organs. For example, in humans, pharyngeal slits are present in embryos and later develop into the middle ear.

 Choices:

- inner ear

- outer ear

- long ear

- middle ear


A:
middle ear