Read the passage and choose the best option to answer each of the following questions

Insomnia is a serious problem that affects people of all age groups. While there are many approaches to treating this problem as well as other common sleep disorders, research has demonstrated that listening to relaxing classical music can be a safe, effective, and affordable remedy.

In a study looking at college students, participants listened to classical music, an audio book, or nothing at all. One group listened to 45 minutes of relaxing classical music while another group listened to an audiobook at bedtime for three weeks. Researchers assessed sleep quality both before and after the intervention.

The study found that participants who had listened to music had significantly better sleep quality than those who had listened to the audiobook or received no intervention.

Since music is an effective treatment for sleeping problems, it could be used as an easy and safe strategy for treating insomnia.