Floyd Had Been Working at Qualton Enterprises for Two Years

Floyd had been working at Qualton Enterprises for two years when his boss asked to see him in her office.The boss told Floyd he was being laid off as a result of company downsizing.Floyd could feel his heart pounding as he listened to the news.Floyd has a new job,but every time his new boss asks to talk to him in private,Floyd feels a little faint.What term is used to describe the event of Floyd's new boss asking for a private talk in this example

A)  unconditioned stimulus 
B)  conditioned stimulus 
C)  conditioned response 
D)  unconditioned response