​Which of the Following Is an Inadequate Explanation for Why

Multiple Choice

​Which of the following is an inadequate explanation for why some individuals are more vulnerable to depression than others?

A) ​Ineffective coping strategies may increase vulnerability to depression.
B) ​Rumination may increase vulnerability to depression.
C) ​Major life stress may provide a "kindling" experience that increases vulnerability to depression.
D) ​Certain genes have been implicated in vulnerability to depression, regardless of environmental factors.