Answer: A. worrying increases one's bodily arousal, which can prevent normal sleep.
Step-by-step explanation:
The arousal refers to the state of physical and/or mental activation that we experience when we are on alert. The arousal can be cognitive, emotional or physical.
Emotional arousal occurs when there is a very high emotional load that keeps the person on alert due to an excess of adrenaline production in the body.
In this case, Mr. Grammarcy is experiencing emotional activation due to his marital problems. This activation is responsible for preventing sleep at night, the most advisable to help him to sleep is to find a solution to the problems he has with his wife.
I hope this information can help you.