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A no regrets adaptation measure is one that

  • A.is guaranteed to prevent all future coastal flooding
  • B.is worthwhile under every plausible future scenario
  • C.carries no cost of any kind to the public purse
  • D.can be reversed instantly at no cost whatever

Answer: B

Correct answer: is worthwhile under every plausible future scenario

A no regrets measure pays for itself whether the sea rises fast or slowly - improving monitoring, keeping defence assets in good condition, restricting new development in the erosion zone, restoring dunes. Its merit is that it does not require the future to be predicted correctly. It is not costless, not reversible, and certainly not a guarantee against flooding.

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