Fish is to water as a bird is to air.
Duck and Sparrow are types of birds and it's not really logical for it to be butterfly, I don't think.
Answer:
He
Explanation:
The subject is He because he is being described in the sentence or is talked about.
I hope it helps! Have a great day!
Muffin ^^
The Answer is C. Have you noticed how hard she works?, its the only one that make sense for the Question....