The style of writing influences this:

An impromptu speech does not have to be organized

Indicate whether the statement is true or false

A speaker opens with the following question:

"Did you know that on this date in 1954, the USS Nautilus, the first atomic submarine, was launched at Groton, Connecticut?" What device is being employed in this introduction? A) a reference to a historical event B) an effective use of humor C) a startling fact or statistic D) a preview of the topic