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A task in a blocked state

  • A.is executable
  • B.is running
  • C.must still be placed in the run queues
  • D.is waiting for some temporarily unavailable resources

Answer: D

Correct answer: is waiting for some temporarily unavailable resources

A blocked process is waiting for something that is not yet available - the completion of an input operation, or a semaphore held elsewhere. It is not executable and does not belong in the run queue: the scheduler will not consider it again until the event it waits for occurs and moves it back to ready.

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