Answer:
c. exaggerate
Step-by-step explanation:
Typically, before and after photos is used by company to convince the customers that their product has a desired effect. You can see this in advertisement for almost every products for weight loss (such as appetite suppressant or workout equipment.)
The before after photos that showed in the advertisement often exaggerated in order to give positive impression toward their product. For example, the companies often took the before and after photo from different angle in order to make the people seems slimmer.