Matthew Used to Like Strawberries and Tried Some Frozen Strawberry

Multiple Choice

Matthew used to like strawberries and tried some frozen strawberry daiquiris one night.After the sixth daiquiri, Matthew became extremely ill.Now Matthew finds that even the smell of strawberries can make him feel nauseated.In this example of classical conditioning, the unconditioned stimulus is:

A) the illness that followed the sixth strawberry daiquiri
B) the strawberry daiquiris that Matthew consumed
C) the smell of strawberries
D) the nausea that Matthew feels when he smells strawberries