Final answer:
When leaving phone messages for customers, it is important to indicate the necessity of a callback, which can help ensure timely communication and address important matters promptly. This approach demonstrates professionalism and commitment to meeting customer needs.
Step-by-step explanation:
The correct answer to the question is A. True. When leaving phone messages for customers, it is indeed important to let them know whether or not it is crucial for them to return your call. This clarity helps prioritize the call's urgency from the customer's perspective and ensures that significant issues are addressed promptly. For instance, if you're following up on the status of an application as mentioned, marking your calendar for a return call demonstrates professionalism and commitment. Similarly, in an email campaign, following up with a phone call can show persistence and a willingness to provide a solution to the customer's needs. Always leave your contact information so they have the means to reach back to you.