Ewan is potty training his daughter. He puts a sticker on a chart every time she successfully uses the toilet. She can pick a toy once she earns ten stickers. This issue of a reward is an example of a. behavior modification
b. primary reinforcement
c. classical conditioning
d. instinctive drift
e. negative reinforcement

The correct answer is C. classical conditioning.

Explanation:

This type of conditioning, also known as Pavlovian conditioning, means that two stimuli are connected in order to produce a new type of response. In this case, the daughter receives a sticker every time she successfully uses the toilet, and once she collects ten of them, she gets a reward (she can pick up a toy). It is the same experiment Pavlov did with the salivating dog.