Select the option that is related to the fifth word in the same way as the second word is related to the first word and the fourth word is related to the third word.

Retina : Eye :: Pons : Brain :: Cochlea : ?

Ear

Pattern followed is :

Retina : Eye

Retina is present in eye .

Pons : Brain

Pons are present in Brain .

Similarly ,

Cochlea : ?

Cochlea is present in Ear .

So , Ear is correct answer .