Imagine you are running an ad for a diet book written by an MD who is not a celebrity.
You can only show one image.
Your choices are a picture of:
A. The front cover of the book.
B. A head shot of the author.
C. A before and after shot of a middle-aged home-maker who went from obese to normal weight by following the diet.
D. A photo of a sexy, toned female model wearing a belly shirt showing off her rock-hard abs.
E. A photo fo a sexy, toned male model showing his rock-hard abs.
You cannot test. You can only pick one.
Which would you pick? And why?