Final answer:
The customer has not enabled traffic avoidance in the settings.
Step-by-step explanation:
The correct answer to the customer's question is option c) The customer has not enabled traffic avoidance in the settings.
TomTom navigation does offer traffic avoidance features, and the Uconnect 5 Nav system does support traffic avoidance. However, it is possible that the customer has not enabled this feature in the settings of their navigation system.
To enable traffic avoidance, the customer should go to the settings of their Uconnect 5 Nav system and look for a specific option related to traffic avoidance. It may be necessary to consult the user manual or contact customer support for more specific instructions for their particular navigation system.