Which of the following is not a method used by DTS to protect travelers from auto-cancellation of reservations?

The correct answer is attributed to the fact that DTS does not have a mechanism in place to automatically book a new flight if the original is canceled. This approach misrepresents how DTS operates in terms of managing reservations. Travelers are typically informed through notifications and alerts regarding their reservations to help them be proactive and manage their bookings effectively.

Creating alerts for upcoming reservations and extending the authorization period are methods used to give travelers more control and flexibility regarding their bookings, allowing them to act on potential issues such as cancellations. However, the automatic rebooking of flights does not take place within DTS's operational framework, highlighting the emphasis on keeping travelers informed and allowing them to make necessary changes themselves instead.