What promotional tool is primarily used in the advertisement offering multiple free items with a purchase?

Incentive marketing is a promotional tool that effectively encourages consumer behavior by offering additional value, such as free items, with a purchase. This strategy aims to motivate potential customers to buy a product or service by enhancing their perception of value. When an advertisement promotes multiple free items included with a purchase, it directly appeals to consumer desires for savings or added benefits, making it more enticing.

The core idea behind incentive marketing is that it creates an immediate tangible benefit to the buyer, which can lead to increased sales and customer loyalty. Consumers are more likely to feel compelled to make a purchase when they see the promise of supplementary rewards, thus making it a powerful promotional technique.