Concept:Sales promotion is a marketing tool that uses short-term incentives, such as free samples or gifts, to create product awareness and increase demand.
Explanation:When a company distributes free samples or gifts, it is using a direct promotional method to attract customers.
These activities are temporary and are designed to encourage consumers to try the product.
Sales promotion is one part of the promotional mix, together with advertising, personal selling, and publicity.
The marketing mix covers the four Ps: product, price, place, and promotion, which is broader than the activity described.
Marketing concepts refer to the guiding philosophies of marketing decisions, not to specific promotional actions.
Window display is a visual merchandising technique used inside a shop, not a method of giving out items.
Therefore, giving samples or gifts to create product awareness is a clear example of sales promotion.
Answer:D. sales promotion