Answer:aversion conditioning; classical conditioning
Explanation:
Principle of classical conditioning refers to a learning procedure of mixing biological stimulus with previous neutral stimulus in this case cigarettes which is a previous stimulus is mixed with foul tasting substance (biological stimulus) to introduce a bad taste to smokers .
Aversion conditioning or therapy, psychotherapy is used to eliminate an or eradicate an unwanted behaviour by exposing a person to undesirable tastes .
The introduction of the taste that will cause nausea through smoking cigarettes is aimed at making smokers hates cigarettes due to that secretly introduced taste to cigarettes.
Types of stimulus that can be used in this therapy are electrical, chemical, or imagined aversive situations.