A biological perspective would be least helpful for explaining the:
a. prevalence of schizophrenia throughout the world.
b. fluctuations in mood experienced by those suffering a bipolar disorder.
c. fear of snakes experienced by a high percentage of Americans.
d. dramatic increase in reported cases of dissociative identity disorder during the past 40 or so years.

Respuesta :

A biological perspective would be least helpful for explaining the D. dramatic increase in reported cases of dissociative identity disorder during the past 40 or so years. 
I'm assuming this is the correct answer because it is the only option which deals with a disorder over time, whereas the other options are at the present moment.