Question:  Suppose NAME_1 says, "I understand that the use of the pesticide DDT will prevent thousands of human beings from dying of malaria. But it is still wrong to use DDT, because ultimately all that matters is the functional integrity of the ecosystems in which human beings live, and using DDT will severely damage this integrity." NAME_1 is most likely a proponent of
A: biocentrism.
B: anthropocentrism.
C: ecoholism.
D: ecocentrism.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.