The pronoun for the sentence is D.object
Glad to help you ^-^
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.
