Mr. lopez believes that severe depression results primarily from an imbalanced diet and abnormal brain chemistry. mr. lopez favors a perspective on depression.

Biological.

Explanation:

Depression may be defined as a medical condition that affects the brain activity and depress the mood of an individual. Depression ultimately result in the loss of interest in any cultural activity.

Mr.Lopez finds that depression occur primarily from abnormal brain chemistry and imbalanced diet. The Lopez favors the biological perspective to explain the depression.

Thus, the answer is biological.

the trait of personality falls in the middle of the diagram because personality is a mixture of ones nature and environment.