Veronica had been working at Zenex Industries for eight months when her boss asked to see her in his office. When she walked in, the boss told Veronica she was being laid off as a result of company downsizing. Veronica could feel her heart pounding as she listened to the news. Veronica was able to get a new job, but every time her new boss asks to talk to her in private, Veronica feels a little faint. In this example, the unconditioned response is