Eventually, everyone must sleep due to our

• A. need for mental rest.
• B. delta waves.
• C. beta waves.
• D. biological rhythms.

Answer: (D)

Verified step by step guidance

1. Understand the concept of biological rhythms: Biological rhythms are natural cycles of change in our body's chemicals or functions. They are crucial for regulating sleep, wakefulness, and other bodily functions.
2. Recognize the role of sleep in biological rhythms: Sleep is a vital part of our biological rhythms, specifically the circadian rhythm, which is a 24-hour cycle that influences sleep-wake patterns.
3. Differentiate between different brain waves: Delta waves are associated with deep sleep, while beta waves are linked to active thinking and alertness. These waves are part of the sleep cycle but not the primary reason for the need to sleep.
4. Identify the necessity of sleep: Sleep is essential for mental and physical restoration, memory consolidation, and maintaining cognitive functions, all of which are regulated by biological rhythms.
5. Conclude that the need for sleep is driven by biological rhythms: Biological rhythms ensure that our body follows a regular pattern of sleep and wakefulness, highlighting their importance in the necessity of sleep.