Correct.  With a test question that contains double negatives:

  • cross the negative words out
  • rewrite the statement
  • determine if the statement is true or false.
  • It is unprovable that there is life in outer space.
  • It is provable that there is life in outer space.
  • It is possible to prove that there is life in outer space, considering our technology and space exploration.  Therefore, the statement "it is unprovable" is false.

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