The lever to move my driver seat in my 2007 Honda fit broke. It looks like the whole mount came off. How do I fix that?

 

Is it just the handle and lever that broke off? Possible to have it welded back on or replace the entire seat with a used one.

 

The seat rails assemblies are separate from the seat and replaceable if you can't get it repaired it can be found new at the dealer or possibly used in a late model junkyard. But for simplicity's sake replacing the whole seat is the easiest way to go.