Platypus : Oviparous :: Scorpion :
  1. Ovoviviparous
  2. Viviparous
  3. Neoteny
  4. Adoption
Explanation
Answer: B - The answer is B because, just as the platypus is an oviparous, or egg-laying, mammal, a scorpion is viviparous, or gives birth to living young.
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