Opinion change resulting from a thoughtful focus on the content of arguments illustrates
a. central route persuasion.
b. normative social influence.
c. social facilitation.
d. cognitive dissonance.
e. peripheral route persuasion.

A. A central route persuasion

Explanation:

A central route persuasion refers to a persuasion that occurs because of the core content of the message rather than relying on other factors. In order for this to happen, both the messenger and the receiver need to be open minded to new outcome and can Utilize their thought process to properly analyze an argument.

Compared to other forms of persuasion, central route persuasion tend to be harder to achieve, but the effect of the persuasion tend to last longer.

the answer is b, encourage free trade