Final answer:
Presto is using television commercials and a customer contest as consumer sales promotion methods for the new stovetop grill.
Step-by-step explanation:
The consumer sales promotion methods that Presto is using for the new stovetop grill are television commercials and the customer contest.
The promotional plan includes television commercials to showcase the product and in-store rebates, and it also features a customer contest to engage and incentivize customers. These methods aim to create awareness, excitement, and encourage consumers to purchase the grill.