A student researching sleep science has taken the following notes:
• Adults need 7-9 hours of sleep per night for optimal health • During REM sleep, the brain consolidates memories and processes emotions • Sleep deprivation is linked to increased risk of obesity and heart disease • Blue light from screens suppresses melatonin production • Consistent sleep schedules improve sleep quality
The student wants to explain why screen use before bed is problematic. Which choice most effectively uses relevant information from the notes?
Adults need 7-9 hours of sleep per night to maintain optimal health and cognitive function.
During REM sleep, the brain consolidates memories and processes emotional experiences.
Blue light from screens suppresses melatonin, the hormone that regulates sleep, making it harder to fall asleep.
Maintaining a consistent sleep schedule is one way to improve overall sleep quality.
Correct Answer: C
Choice C. Blue light suppressing melatonin explains why screen use is problematic.