In One Study,captured Wolves Were Fed Sheep Carcasses Containing Lithium

Multiple Choice

In one study,captured wolves were fed sheep carcasses containing lithium chloride,a chemical that causes severe nausea and vomiting.After recovering from this very unpleasant experience,these same hungry predators were placed in a pen with a live sheep.At first,the wolves moved toward the sheep in attack postures.However,as soon as they smelled their prey,they backed off and avoided further contact.In this study the unconditioned response is ____.

A) sheep
B) severe nausea and vomiting
C) backing off
D) carcasses containing lithium chloride