You are presented with the quiz "How do frogs absorb oxygen?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "skin is used for breathing air by frogs" and "frogs breathe and absorb water through their skin, which is periodically shed". So, what's the best answer to the question?

pick from the following.
[a]. They drink water
[b]. flow of electrons
[c]. Jumping really high
[d]. during the day
[e]. By breathing through their nose
[f]. matter vibrating
[g]. Through their skin
[h]. circulatory systems
The answer is:
[g].