Answer:
Hormones
Explanation:
Hormones. Other possible causes of mood swings may stem from an imbalance of the brain chemicals that are associated with mood regulation, as in the case of bipolar disorder. However, a person's risk for depression is increased during these times as well, so mood swings can also be a sign of a mental health condition.
This describes Mr. Harvey, the serial killer, who has killed and gotten away with it so often that he almost believes his own innocence.
start with what you want to do
Option C .............................
