In the premise it is stated, Offshore oil-drilling operations entail "an unavoidable risk of an oil spill"
It means no matter how much you invest in off-shore drilling, you can only reduce the risk, not minimize it to zero.
Now if by some means we can prove that risk of oil spill in case of tankers is reduced and so that the risk in tankers is less than risk in off-shore drilling then we can make the conclusion less believable.
Choice A does that.
Thanks
It means no matter how much you invest in off-shore drilling, you can only reduce the risk, not minimize it to zero.
Now if by some means we can prove that risk of oil spill in case of tankers is reduced and so that the risk in tankers is less than risk in off-shore drilling then we can make the conclusion less believable.
Choice A does that.
Thanks
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