Cladograms are branched diagrams representing evolutionary relationships. A cladogram with representative animals is shown below.


The traits M, N, O and P would represent:

• A

  M: Nails, N: Jaws, O: Fur, P: Opposable thumb
• B

  M: Lungs, N: Vertebral column, O: Bipedal locomotion, P: Mammary glands
• C

  M: Vertebral column, N: Jaws, O: Mammary glands, P: Nails
• Correct answer
  D

  M: Lungs, N: Claws, O: Fur, P: Opposable thumb

Hence, the correct answer is option: 'D'.