Appeals Made in Person, Over the Internet, or Through the Mass

Appeals made in person, over the Internet, or through the mass media rely on the spoken word, the written word, and the image or video. To understand why certain approaches are effective whereas others are not, social psychologists seek to understand

A) whether persuasion is moral or not.
B) how and why persuasive communications work.
C) the central route persuasion, but not peripheral.
D) the peripheral route persuasion, but not central.