Ford 1994 f150 won't crank, what can it be?

Ford 1994 f150 won't crank, what can it be? - 1

Dead battery
bad starter
bad wiring to the starter
bad ignition switch
bad ignition wiring

Bad:
starter
starter solenoid
battery
battery terminal cables
loose or bad battery cables
seized engine
ignition switch is bad
safety neutral switch is bad
any or a combination of any of the above.
I might have missed a few more.