Nicholas has been diagnosed with depression, borderline personality disorder, and a phobia of social interactions. since nicholas has multiple mental disorders at once, we would say that a high exists in his case.

The correct answer is :

Comorbidity

Explanation:

Comorbidity is the term used to refer the medical cases in which several clinical conditions affect the patient. Sometimes, it happens that there is a primary condition that has an effect to unchain the others as complication of the entire system. For example, a patient with diabetes could develop also a coronary artery disease in the evolution of the condition. Another case could be when a patient is diagnosed with depression and this can cause also anxiety episodes.  

add the answer choices and i'll give you the answer

it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.it brings together the military and civilian sectors of society to harness the total power of the nation. it is the mechanism that facilitates the successful prosecution of any conflict.