What is one sign of potential conversion when communications are ineffective?

The indicator of a non-working phone number of the customer signifies a potential conversion issue when communications are ineffective. Communication is crucial in rental transactions, as it helps maintain a relationship between the customer and the agency. A non-working phone number suggests an obstacle in addressing concerns or clarifying information regarding the rental, which increases the risk of misunderstandings or unresolved issues. This lack of effective communication can hinder discussions related to the rental process, such as extensions or payments, leading to potential complications or frustrations for both parties.

In contrast, the other choices represent different situations that may not necessarily point to ineffective communication. Regular check-ins from a customer regarding rental status typically indicate interest and engagement rather than a conversion issue. Frequent contact with the rental agency usually demonstrates a proactive relationship rather than ineffective communication. Similarly, the visibility of the customer's vehicle on the premises might be indicative of ongoing rental activity or compliance but does not necessarily signify communication challenges. Thus, a non-working phone number stands out as a critical sign of a potential communication breakdown affecting conversion.