Who is most likely to use the central route to respond to persuasive messages?

Here are the full answer choices:
Who is most likely to use the central route to respond to persuasive messages?
a. Emma, an anthropology major, who is taking an economics class pass/fail in order to fulfill a college requirement 
b. Danielle, who notices an eye-catching billboard for a brand of beer as she drives on the highway to her grandparents' house 
c. Jorge, who plans to attend a guest lecture on worldwide water shortages, a topic about which he has read a great deal

The answer is  C. Jorge.
The use of central route of persuasion refers to a situation when someone persuaded to do something SOLELY because of the content of the message.
In option A, Emma is persuaded by the sense of obligation and in option B Danielle is persuaded by visual attraction.