Jaden is a student in biology. He was talking with his classmates about how many hours of sleep they get each night. Students shared what they do right before they go to sleep: - Some students used their phones.

- Some students listened to classical music.

- Some counted sheep.

Help Jaden come up with a testable investigative question related to ONE of these factors.

Remember a testable question or problem includes an independent and dependent variable.

Question 1 options: