The correct option is
B I - D, II- C, III - B, IV - AThe red eyed frog has developed sticky pads below its feet. These pads help the frog to hold the tree while climbing.
Toucan has developed a long and large beak. This beak helps the bird to reach and feed on the fruits which are far away and the branch is not so strong to bear the weight of the bird.
Big cats have developed a thick skin. They have ears which are sensitive in hearing. This helps it to follow and catch the prey.
The polar bear has developed a thick skin with fur. The fur protects from cold temperature. The sense of smell helps to move away from the predator.
Thus, the correct answer is option C.