Final answer:
Hamburger restaurants often use coupons, which are sections of print advertisements, as a promotional method to offer discounts and attract customers.
Step-by-step explanation:
A promotional method frequently used by hamburger restaurants is to redeem a section of a print advertisement, referred to as a coupon.
This marketing strategy involves offering a discount or a special deal to customers who present the coupon when making a purchase.
By doing so, restaurants can attract new customers, reward loyal ones, and increase overall sales.