With the earth being ravaged by us, we may find ourselves with more dire questions than this. As a first step, I and my wife have been trying to live with minimum things..
That apart if faced with such a question - I'd beg to take my wife along because with her by my side I can face anything..
Next for the 3 things:
(1) survival kit - whatever I've observed being used by bear grylls
(2) sources of water and fire
And
(3) the knowledge and the ability to wake myself out of this nightmare so I can return to my day job!