Answer: Stephanie tells herself that smoking is okay because she only smokes a few cigarettes daily best illustrates cognitive dissonance.
Explanation: cognitive dissonance occurs when there is inconsistencies with an individual their mental acceptance of an idea with their actions.
Stephanie knows that smoking cigarettes is not okay but she made herself believe that smoking a few cigarettes a day is okay. This is a good example of cognitive dissonance because Stephanie's mental acceptance of smoking is different from her actions towards smoking.