Based on Research by Briñol and Petty (2003) in Which

Based on research by Briñol and Petty (2003) in which participants were presented strong or weak arguments on an issue while they were either shaking their heads or nodding their heads, which of the following people would be most persuaded by an argument?

A) Jack, who hears a weak argument
B) Sam, who hears a strong argument
C) Nick, who is very confident in the argument
D) Al, who is not very confident in the argument he hears