Which of the following is the correct arrangement of the animals represented?

Use the diagram above to answer this question. With respect to their decreasing dependence on aquatic conditions for reproduction, which of the following is the correct arrangement of the animals represented?

A. l, IV, II and lll
B. IV, lll, ll and l
C. l, ll, IV and lll
D. lll, ll, IV and l

Correct Answer:

Option B – IV, lll, ll and l