The correct option is C Frog
The absence of thumb is a feature of a frog. The structure of the feet and legs varies depending on their habitat. Frogs must be able to move quickly through their environment to catch prey and escape predators, and numerous adaptations help them to do so. Many frogs have webbed feet and the degree of webbing is directly proportional to the amount of time the species spends in the water. So, the correct answer is option C.