Linda: During the summer months, people normally take vacations. Ttherefore, during the summer months, the local economy suffers since local residents spend their money at their vacation destinations. Billy: Why do you think that the local economy would be suffering? During the summer months, tourists who come to our city actually spend lots of money at local businesses, attractions, and restaurants.
The reply offers an additional factor to consider that weakens Linda's conclusion most correctly explains how Billy's reply is related to Linda's argument.