Social psychologists Richard Nisbett and Dov Cohen found that, in the U. S., men from the South tend to respond to insults more aggressively compared to men from the North. They argued that a key reason for the difference is the fact that .
A) Southerners come from warmer climates
B) there is a southern culture of honor
C) Southerners tend to have spicier diets
D) there is more violent media in the South than in the North

B) there is a southern culture of honor

Explanation:

In social psychology, the term culture of honor refers to a culture in which members from this culture feel the need to protect their reputation by answering to insults or threats using violence.

There have been many cultures of honor throughout history: like the Wild West. In these cultures, there's a belief that there's no authority who will be in charge of protecting the people so they can take "justice" when it comes to their reputation into their own hands.

Currently, in the United States, the southern states have a culture of honor, thus, they tend to respond to insults more aggressively compared to men from the North.