Which of the Following Scenarios Does Not Reference the Use

Which of the following scenarios does not reference the use of a presentation aid?

A) Julia plays a short audio clip from Beethoven's Fifth Symphony in her speech about this composer.
B) Andre shows his audience a diagram of the shotgun formation for the offensive line in his speech about football.
C) Denise describes how to stretch out your quadriceps in her speech about physical fitness.
D) Allan shows his audience a bar graph comparing the rise in inflation with the rise in gas prices since 1965 in his speech about the oil industry.
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