Final answer:
Option (a) displays is not a consumer sales promotion. Options (b) free book giveaway, (c) coupons, and (d) contests are examples of consumer sales promotions.
Step-by-step explanation:
The answer to the question is option (a) displays. Displays are not considered a consumer sales promotion as they are typically used for showcasing products and attracting customers, rather than offering incentives or discounts to consumers.
In contrast, options (b) free book giveaway, (c) coupons, and (d) contests are all examples of consumer sales promotions. A free book giveaway involves offering a free book as a promotion to attract customers, coupons provide discounts or special offers to consumers, and contests are competitions that offer prizes to customers who participate.