B.) phone call
because when you call the angry customer you can talk to them and work it out. If you do the others it will be complicated and calling is more easier. In my opinion I will call.
Rainsford's actions are justified because he will never truly be free until Zaroff is dead. A "beast at bay" refers to someone who is still being hunted. Rainsford will always feel hunted as long as Zaroff is alive, because he knows the 'hunt' will always go on in Zaroff's mind. He has to kill Zaroff so he doesn't have to live in fear.
The prefix 'pre' means earlier or prior to
eg. previous.
the affix 'pro' means for
eg. pro-life