Answer:
Direct denial
Step-by-step explanation:
In responding to obejections one can use various methods that suits the particular situation. A person can provide a logical argument when the objection is valid in a bid to convince the other party that their product is suitable for their needs.
In this instance Vince's firm has been in operation for over 15 years. The objection that start-up landscaping firms go in and out of business in just a few months can be answered with a direct denial.
Vince told them the business is not a startup but has been in business for 15 years.