Which is NOT a key element of effective communication?

Vagueness is not a key element of effective communication because effective communication relies on precision and clarity to convey messages accurately. When communication is vague, it leads to misunderstandings and confusion, which detracts from the effectiveness of the interaction.

In contrast, credibility is critical as it helps build trust between the communicator and the audience. Clarity ensures that the message is easily understood, while audience awareness involves tailoring the message to meet the needs and expectations of the listeners. Both clarity and audience awareness are essential for promoting engagement and facilitating a better understanding of the message being shared. Therefore, vagueness stands out as the element that undermines successful communication efforts.