egg, nymph, pupa, adult egg, larva, nymph, adult egg, nymph 1, nymph 2, adult egg, larva, pupa, adult
I gave my students this multiple choice question: Many insects go through metamorphosis. Which series shows the stages of complete metamorphosis correctly?

Only one answer is correct among these 4 choices:
- egg, nymph, pupa, adult
- egg, larva, nymph, adult
- egg, nymph 1, nymph 2, adult
- egg, larva, pupa, adult

Could you tell me which one is correct?

egg, larva, pupa, adult