Final answer:
The infomercial's persuasion in this scenario took the central route of persuasion according to the elaboration likelihood model.
Step-by-step explanation:
According to the elaboration likelihood model of persuasion, the infomercial's persuasion in this scenario took the central route. The central route to persuasion focuses on logic and uses data and facts to convince people of an argument's worthiness. In this case, the infomercial emphasized the benefits and features of the food dehydrator, such as preserving food and saving money, which appealed to Sylvia's analytical thinking. It is likely that she was persuaded by the quality of the information presented and made a lasting attitude change.