TOEFL Listening: ETS-TOEFL听力机经 - WOE_9584491WP13YP$

What does the student mean when he says this: A. The obvious solution to the problem is unlikely to occur. B. There are many different approaches available to save the whales. C. Preserving marine life is more important than commercial shipping. D. Noise is not as destructive as other forms of ocean pollution.