In Which of the Following Cases Will a Less Formal

Multiple Choice

In which of the following cases will a less formal style of communication be most appropriate?

A) When communicating with someone at a higher level than you
B) When communicating with someone whom you know
C) When writing a ceremonial message, such as a commendation or inspirational announcement
D) When writing an official reprimand
E) When writing letters, long reports, or external proposals