Final answer:
Effective communication can be signaled by people nodding or commenting, staff returning to work with a clear understanding, and general positive engagement, rather than silence or minimal feedback.
Step-by-step explanation:
A sign that you have communicated effectively includes several indicators, such as when people comment or nod in response to what you've said, which suggests that they understand and acknowledge your message. Additionally, when the staff resumes work after a communication, it can indicate that they have received the necessary information to proceed.
Observing positive feedback and engagement, like people seeking clarification or proposing ideas, also points to effective communication. However, a mere "okay" or absence of questions does not necessarily imply successful communication, as it might also represent a lack of engagement or understanding.
Therefore, in the context of effective communication, signs such as engagement, acknowledgment, and the encouragement of further dialogue are more reliable indicators than silence or minimal feedback.