Q: How many bones does the  mammalian middle ear have?


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

The mammalian middle ear has three tiny bones that carry sound vibrations from the outer to inner ear. The bones give mammals exceptionally good hearing. In other vertebrates, the three bones are part of the jaw and not involved in hearing.

 Choices:

- two

- twelve

- four

- three


A:
three