【单选题】The destruction of our natural resources and contamination of our food supply continue to occur, largely because of the extreme difficulty in affixing(附加) legal responsibility on those who continue to...
A.
they are unaware of the consequences of what they are doing
B.
they are reluctant to sacrifice their own economic interests
C.
time has not yet come for them to put due emphasis on it
D.
it is difficult for them to take effective measures