Which of the following best completes the passage below?
At a recent conference on environmental threats to the North Sea, most participanting countries favored uniform controls on the quality of effluents, whether or not specific environmental damage could be attributed to a particular source of effluent. What most, of course, be shown in order to avoid excessively restrictive control, is that .
A: any uniform controls that are adopted are likely to be implemented without delay
B: any substance to be made subject to controls can actually cause environmental damage
C: the countries favoring uniform controls are those generating the largest quantities of effluents
D: all of any given pollutant that is to be controlled actually reaches the North Sea at present
E: environmental damage already infliected on the North Sea is reversible
Can somebody help me to understand why the correct answer is B? Also, can you explain the process
how you come up with a right answer? Because I normally know "evidence", "conclution" and "assumption" if there are strength, weakness questions, but I like to know how I should lead the right answer when I have this type of question(complete the sentence). Thank you for your advice.