Answer:
supporting facts
Step-by-step explanation:
A business message with strong reasoning has as main objectives to convince a consumer to close a deal or an employee to perform certain tasks for example, the objective is always to support an idea and positively impact and convince the public of something.
Therefore, the most suitable option for a business message with strong reasoning is to use supporting facts, as the recipient of the message will feel much more transparency and security when believing in your message if it is supported by concrete facts that support it, and this can be a strong argument to strengthen and reaffirm your idea so that it is more convincing and supported.