Buffy was driving her minivan to her job at Flora's Florist when she entered the intersection of Crash Road and Burn Drive and was hit by another car. After the accident, Buffy's blood pressure went up and her heartbeat increased. The next day, Buffy was driving her new SUV to work. When she entered the intersection of Crash and Burn, her blood pressure went up and her heartbeat increased.
The next day, when Buffy drove through the intersection of Crash and Burn in her new SUV her blood pressure and heart rate increased. According to classical conditioning, this increase is an example of?
