The correct option is A Frog
Frogs are classified as amphibians, i.e., animals that live on land as well as in water. They have few adaptive features such as strong legs that help them in leaping and webbed feet which help them to swim in the water. They have lungs to breathe on land, and skin is adapted to help them breathe in water.
Fishes are aquatic organisms. Silverfish is an insect that cannot fly, and it is a terrestrial organism. Crow, a bird, is an aerial organism.