You are presented with the quiz "What is a requirement whose amount varies between organisms?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an organism requires energy for growth" and "different organisms have different growth requirements and growth rates". So, what's the best answer to the question?

(A). food (B). energy (C). existence (D). entropy (E). sunlight (F). H20 (G). entity (H). Energy.
Answer:
(B).