Some bears kept in captivity allow veterinarians to routinely give them total body checkups. these bears open their mouths for teeth cleaning and present their paws for nail clipping. your friend wonders how anyone could ever get these dangerous animals to be so cooperative without anesthesia. from your study of psychology, you quickly surmise that the bears have undergone an extensive program. a. fear extinctionb. discriminationc. secondary reinforcementd. operant coditioning

Operant conditioning

Explanation:

Operant conditioning is a learning method that is based on rewards and punishments for behaviour.

Operant conditioning has a premise. "Actions that are followed by reinforcement will be strengthened and more likely to occur in the future"

According to this, an example could be when while at home you knock the door before entering your parents bedroom. If this behaviour is praised by your parents, then you will be more likely to repeat this kind of behavour since you were already shown a praise or reward.

it says days

explanation:

he can sleep nights. hope this

im 100% sure its all of the above.