Answer:
The pink flower
Step-by-step explanation:
Classical conditioning is a type of learning that had a major influence on behavioral psychology, a systematic approach to psychology that emerged in the nineteenth century and assumes that many behaviors are the product of association, reflexes produced by a conditioned response to certain stimuli. This association, moreover, is a consequence of this person's story.
With this, we can conclude that, according to classical conditioning, the conditioned stimulus (which is the one that causes a reaction) is the pink flower that the baby's mother points to him. This is because the baby was stung by a bee when it touched a pink flower, so he associated the flower with the pain he felt at the time of the sting.