Answer:
Shortest.
Step-by-step explanation:
A zone of tolerance can be defined as a perceived customer or consumer view of the service offered by an organization which typically ranges from the desired standard to the minimal standards that are acceptable.
Simply stated, zone of tolerance is the difference between the level (standard) of service that is adequate and a level of service desired by customers.
Hence, the service dimensions with the shortest zones of tolerance are the most important for a business to deliver on i.e a service that has a minimum difference between service desired and the level of service considered to be adequate.