Read the following passage and answer the question below. Sleep is a fundamental biological process essential to physical health, cognitive function, and emotional well-being, yet many people fail to get an adequate amount of it. During sleep, the body repairs tissues, consolidates memories, and clears out toxins that accumulate in the brain during waking hours. Research has shown that chronic sleep deprivation is linked to a range of health problems, including obesity, weakened immune function, and an increased risk of cardiovascular disease. Sleep also plays a crucial role in learning, as the brain processes and stores information gathered throughout the day during certain sleep stages. Experts generally recommend that adults get between seven and nine hours of sleep per night for optimal health. Despite this recommendation, modern lifestyles involving excessive screen time, irregular schedules, and high stress levels have contributed to a widespread reduction in sleep quality and duration across many populations. Question: According to the passage, how many hours of sleep do experts generally recommend for adults?
- A. Between four and five hours
- B. Between seven and nine hours ✓
- C. Between ten and twelve hours
- D. Exactly six hours
Correct answer
B. Between seven and nine hours
Explanation
The passage states that experts generally recommend adults get between seven and nine hours of sleep per night.