Spock

Kirk is out of it and Spock is put in command. Now that he has a responsibility to the ship, he doesn't want to do the operation to save his father. Enterprise is in too much danger for him to give up his responsibility in order to save one person. Spock must really have no faith in Scotty's ability to command the ship. Bones and Spock's mother try to convince him to do the procedure.

Kirk is out of it and Spock is put in command. Now that he has a responsibility to the ship, he doesn’t want to do the operation to save his father. Enterprise is in too much danger for him to give up his responsibility in order to save one person. Spock must really have no faith in Scotty’s ability to command the ship. Bones and Spock’s mother try to convince him to do the procedure.