Answer:
D.discussing personal issues and complaining about problems
Explanation:
Just like in other settings, business messages are relayed to achieve an objectives, which is mainly to make others informed.
In other to achieve this objective, there are manners in which that message should be encoded.
Examples are providing practical information, clarifying expectations and expectations and responsibilities and presenting information concisely and efficiently. All of these will make business message effective.
In contrast, discussing personal issues and complaining about problems will not make business message more effective. It will rather defeat its purpose of informing others about business condition.
So all of the options except discussing personal issues and complaining about problems will make your business messages more effective.
