Answer: sales promotion
Explanation: In simple words, sales promotion refers to the process under which an organisation uses specific tools and strategies to persuade potential customers to purchase their product.
These strategies are used for short time purpose and have no effective impact if the organisation is trying to build a customer base for longer time period.
Sales promotion techniques can be implemented directly towards customers or towards sales staff and channel members which indirectly effects customers. Contests, coupons and freebies are some of many examples of sales promotion.