What military options are open to the US in tackling North Korea?

The United States has not been shy about threatening military action against North Korea.
As Pyongyang continues its march towards nuclearisation, US President Donald Trump has threatened to “totally destroy” the reclusive authoritarian regime with “fire and fury”, reiterating that “all options are on the table”. But he did not say how and when.
US Secretary of Defence James Mattis earlier threatened North Korea with a “massive military response”…