Question: In a completely cooperative relationship, each organism benefits equally. Which sequence lists these relationships in order of increasing cooperativeness?

  Options: 
 A. commensalism, mutualism, parasitism, predation
 B. parasitism, commensalism, predation, mutualism
 C. predation, parasitism, commensalism, mutualism
 D. mutualism, commensalism, parasitism, predation 
Answer: C