Final answer:
During the reviewing stage of a routine message, both proofreading and rereading the message take place.
Step-by-step explanation:
The reviewing stage of a routine message involves both proofreading and rereading the message.
Proofreading focuses on checking for errors in spelling, grammar, punctuation, and formatting. It ensures that the message is clear and professional.
Rereading the message helps to ensure that the content is accurate, coherent, and effectively conveys the intended message.