Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
For eliminating pollution, one can switch to alternative and renewable energy sources like bio fuels instead of depending on non-renewable fossil fuels that only helps in polluting our planet.
A. change for the better
B. substitute for the unavailable
C. make no change at all
D. find a replacement for