In what order do the following structure develop during the metamorphosis of the toad? 1….

In what order do the following structure develop during the metamorphosis of the toad? 1. External gills 2. Internal gills 3. Forelimbs 4.Hindlimbs 5. Mouth
  • A.
    12345
  • B.
    15243
  • C.
    21345
  • D.
    53412
  • E.
    54321
Correct Answer: Option B
Explanation