In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

Comprehension:
Music can improve mood, decrease pain and anxiety, and facilitate opportunities for emotional expression. Research (1)______ that music can benefit our physical and mental health in numerous ways. Music can (2)______ the brain’s production of the hormone dopamine. This increased dopamine production helps (3)________ feelings of anxiety and depression. Music is processed directly by the amygdala, which is the part of the brain (4)________ in mood and emotions. By reducing stress levels and providing a strong competing stimulus to the pain (5) ________ that enter the brain, music therapy can assist in pain management.