The etiology of eating disorders underscores the importance of equifinality, which is the idea that a. eating disorders always cause death. b. eating disorders are entirely caused by genetic factors. c. all eating disorders develop in the same way. d. there are many pathways to developing an eating disorder.

Equifinality is a principle or a systems theory concept that emphasizes that in open systems, the final state in which it is reached by many potential means. Personality disorders stem from numerous factors and different ways, be it biological, social, and the like. 

The answer is then D. There are many pathways to developing an eating disorder. 

Many archeologists and anthropologists disagree with dr. thorne's view.  thorne strongly believes that what many calls "homo erectus"  was in fact  homo sapiens,  and that they migrated out of africa almost 2 million years ago and dispersed throughout europe and asia. that's way different  from what scientists have always believed about the evolution of the species.