Which of the following is an ineffective communication practice?

Using jargon that is not widely understood is indeed an ineffective communication practice. Effective communication relies on clarity and mutual understanding. When jargon is employed, especially if it is not commonly known among all parties, it can create confusion and misunderstandings. This can lead to misinterpretations of messages and the overall purpose of communication being lost.

In contrast, encouraging open dialogue among team members fosters an environment where ideas and feedback can flow freely, enhancing collaboration and understanding. Providing clear instructions ensures that everyone is on the same page regarding tasks and expectations, which is critical for efficiency. Regularly updating staff on changes keeps everyone informed and engaged, which is essential for maintaining morale and alignment within the team. Thus, the use of jargon stands out as a barrier to effective communication, making it the correct answer to identify as ineffective.