The correct answer is C.
A frequently updated social media site with a question and answer forum is by far the best way to communicate with potential voters. The biggest advantage of the internet is its availability. A presidential candidate using his social media site would be able to reach and inform millions of people in just a second. Moreover, he would be able to provide accurate and up-to-date information on his policies, meetings and TV appearances. With a question and answer forum he would be able to engage directly with citizens and the citizens would get the feeling of being listened to. All this would create a proximity with the candidate, and the voters would feel appreciated.
Local meeting, newspaper advertisements, text messages, all work as well during a political campaign but they generate far lower interest and participation than the internet.
