How should mandatory directives be transmitted to prevent errors?

The correct choice emphasizes the importance of using written, printed, or displayed formats when transmitting mandatory directives. This method provides a clear, permanent record of the instructions which is vital for reducing misunderstandings and errors. Written directives can be referenced later, promoting accuracy and ensuring that all parties are on the same page regarding the instructions.

Using verbal-only communication can lead to misinterpretations due to variations in attention, memory, or even distractions during the exchange. Temporary notes might not be reliable as they lack permanence and formal recognition, which could result in critical information being overlooked. Overhead speaker announcements, while audible, may not guarantee clarity and can be easily missed or misheard, further increasing the likelihood of errors. Written, printed, or displayed formats are thus the most effective means of communication in this context, as they enhance clarity, accountability, and retention of mandatory directives.