Answer: Promotion Strategy
Explanation:
Promotion Strategy is the method which is used for spreading information, influencing and targeting the consumers towards the product or services.It helps in reminding them about goods with the help of advertisements, selling samples,offers, social media ads, sales etc .In this way a product or service is promoted in the market field.
According to the question, Nonny's nail salon is using the technique of promotion every year.She is specially offering $15 off on her particular service so that customers can get attracted toward her salon and its services and thus, in this way she promotes the salon .