Dr. Arnold is a biological psychologist interested in understanding how climate influences male ...

Dr. Arnold is a biological psychologist interested in understanding how climate influences male aggression. Which hypothesis most closely reflects a biological psychological perspective?
 
  a. Men who live in warmer climates tend to have higher levels of testosterone, which leads to more male aggression.
  b. Warm weather tends to create more competition and thus more aggression among males.
  c. In societies where climates are warm, attitudes towards male aggression tend to be more acceptable.
  d. In regions with warm climates, people socialize more outdoors, which naturally leads to more male aggression.