Final answer:
The completion of a routine business message typically might take 5 to 15 minutes, as it is enough time to craft a concise and complete communication.
Step-by-step explanation:
The question pertains to estimating the time required to complete a routine business message. While time frames can vary depending on complexity and personal work speed, none of the provided information directly supplies a clear, universally accepted answer for the time taken to compose a business message. However, informed by typical business practices and the context provided, we can use general knowledge to estimate that a routine message, which is likely to be a straightforward task, might be completed within a short period. Answer (D) 5 to 15 minutes seems reasonable as it allows enough time to write a concise, yet complete message without implying a level of complexity or review that would extend beyond what is considered 'routine'.