"kroger® and safeway supermarkets often send out printed certificates which entitle the bearer to certain financial benefits. these certificates are called "

coupons

Explanation:

In marketing, a coupon is defined as a ticket which gives the customers financial discounts that they can redeem when they buy particular products. These coupons are given out by retailers or manufacturers to customers during sale promotion, it helps to draw customers and also to keep the customers.

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