Answer: In professional writing
Step-by-step explanation:
Formal writing is serious writing. It is intended for people whom with the author has little to no familiarity with and is meant to pass on information in an objective manner. This is why it is widely used in Academia and official writing from Professional and government sources.
When either texting a family member, engaging in narrative dialogue or writing to a friend, a more familiar tone is used that can see informal language cues included in the text, this is not the same for professional writing as this must be formal.