Low-Carb, South Beach, the Zone—What do these three phrases have in common? They are all types

of diet programs. I have been dieting all my life. I have tried all the schemes.

However, the most
effective program for me has not been dieting but just good old-fashioned exercise. In fact, the Jazzercise
program has been a friend to me. Today I will share with you the history of Jazzercise, a few basic
techniques, and, lastly, location and cost issues.
Which of the following elements is missing from this introduction?
A. Relevance Statement
B. Attention Getter
C. Reliability Statement
D. Preview Statement

A