a formal tone is most appropriate to use in\n\n- e - mails\n- essays\n- conversation\n- friendly letters

a formal tone is most appropriate to use in\n\n- e - mails\n- essays\n- conversation\n- friendly letters

a formal tone is most appropriate to use in\n\n- e - mails\n- essays\n- conversation\n- friendly letters

Answer

Brief Explanations:

Formal tone is used in professional and academic - like settings. Emails to colleagues or superiors, and essays (academic or professional) require a formal tone. Conversations are usually informal, and friendly letters are personal and less formal.

Answer:

A. e - mails, B. essays