All of the Following Are Biological Factors Associated with Depression

All of the following are biological factors associated with depression EXCEPT which of the following?

A) The biological rhythms associated with sleep tend to be disrupted in depressed individuals.
B) Depressed people are more likely than non-depressed people to have relatives who are also depressed.
C) Drugs that effectively treat depression appear to operate by restoring the balance of neurotransmitters.
D) Depressed people are more likely to have negative views of themselves and the world.