Which word completes the partial relationship and if following sentence a fin is to fish as a what is to a bird

wing..?

wing maybe ?

Eye eye eye when i need it its not there?

To determine the word that completes the partial relationship in the sentence, we need to understand the relationship between "fin" and "fish" and find a similar relationship with a bird.

In this case, a fin is a body part of a fish that helps it swim. So, we are looking for a body part of a bird that serves a similar function. The body part of a bird that is used for flying is its wing.

Therefore, the word that completes the partial relationship in the sentence would be "wing," as a fin is to fish as a wing is to a bird.