Answer:
A. insert the word “diathesis-” before the first appearance of the word “stress”
Explanation:
According to my research on the stress model mentioned, I can say that based on the information provided within the question this is not the correct term for this disorder. The correct clinical term for this disorder is known as Diathesis–stress model. Therefore in order to make this statement true insert the word “diathesis-” before the first appearance of the word “stress”.
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