Final answer:
Sales promotion is usually cheaper and easier to measure than advertising.
Step-by-step explanation:
While advertising offers a reason to buy, sales promotion offers an incentive to buy. Both are important, but sales promotion is usually cheaper and easier to measure. Advertising involves creating awareness and generating interest in a product or service through various channels such as TV, radio, and social media.
On the other hand, sales promotion includes activities like discounts, coupons, contests, and loyalty programs that motivate immediate purchase or increase customer loyalty. Sales promotion can be more cost-effective because it targets a specific audience and has a measurable impact on sales.