Yup. Contract with Elon to cast a large net around Bennu (if indeed it is a loose pile of rubble). Apply low thrust for a couple years. Problem gone.
As part of the contract, Elon can have any materials found on / in the asteroid.
#13. Nah. Just nuke it from orbit just to be sure. H bombs should do the job to either destroy it or break it up and force the pieces away from earth.
Otherwise, call Superman, if he’s not wearing a dress.