Concept:Sales promotion uses short-term incentives, such as free gifts, to encourage immediate customer action.
Explanation:Free gifts are a common example of a sales promotion tool.
Sales promotion is designed to persuade potential customers to buy a product quickly by adding extra value.
Other examples include coupons, contests, samples, premiums, and rebates.
These promotions can target customers, sales staff, or distribution members.
Thus, the marketing aspect that stimulates buying through free gifts is sales promotion.
Answer:B. sales promotion