When is it most appropriate to use

informal English?
in an oral presentation
in an email to your principal
in an essay
in a text to a friend

1 answer

It is most appropriate to use informal English in a text to a friend. Informal English is characterized by a casual tone and conversational language, which is suitable for personal communications among friends. In contrast, the other options—an oral presentation, an email to your principal, and an essay—generally require a more formal or structured approach.