The Primary Reason That Southern Men Are More Aggressive Than

The primary reason that Southern men are more aggressive than are Northern men is that:

A) Southern men have slightly higher baseline levels of testosterone than do Northern men.
B) Southern men are taught to react aggressively to acquire resources based on previous learning experiences.
C) Southern men are taught to react aggressively when they feel their status has been challenged.
D) it is hotter in the South than it is in the North.