An integrated understanding of psychological disorders in terms of three interactive environments is most clearly provided by a approach.

The biopsychosocial approach

Explanation:The biopsychosocial approach is the approach that consist of the factors like psychology and biology as a major part and including social factors as well. They deal with nature of the complexity in the psychology and biological interactions. The interaction of these factors can be related to health ,illness,care etc. It also helps in understanding the psychology relation with environment.

i think it would be b the increase in body temp