Answer: Central-route Persuasion
Explanation:
Central-route for persuasion is defined as convincing technique based on message content.A person is persuaded through this technique by giving him knowledge regarding the main factors, features, characteristics present in the message.
According to the situation of question, salesperson is convincing Darcy through central route.He is providing the main and major content /information about the car such as benefits, disadvantage, features and related explanation.