If a therapist thought that eating disorders were best explained by an interaction of sociocultural, psychological, and biological factors, that therapist would be taking a(n) perspective.

The answer is "cognitive-behavioral perspective".

Cognitive behavioral methodologies depend on the hypothesis that learning forms assume a developmental part in the improvement and maintenance of addictive practices. These treatments are among the most generally contemplated. Considering the broad research that has been directed in setting up Cognitive behavioral treatment as an exactly bolstered treatment and that couple of contrasts are discovered when looking at subjective behavioral medicines , analysts have recommended that powerful components crosswise over Cognitive behavioral methodologies be joined. 

That is true , instead try to have a sit down talk with them