True or False: if false, choose the answer that best corrects the statement.
Circadian rhythms describes the variation in body temperature.

• A. True.
• B. False; circadian rhythms describes the monthly hormonal cycle experienced by men.
• C. False; circadian rhythms describes the 24-hour sleep-wake cycle.
• D. False; circadian rhythms describes the daily changes in the ability to focus.

Answer: (C)

Verified step by step guidance

1. Understand the concept of circadian rhythms: Circadian rhythms are natural, internal processes that regulate the sleep-wake cycle and repeat roughly every 24 hours.
2. Identify the statement given: 'Circadian rhythms describes the variation in body temperature.'
3. Evaluate the statement: While circadian rhythms can influence body temperature, they primarily describe the 24-hour cycle of physiological processes, including the sleep-wake cycle.
4. Review the provided options: Determine which option correctly describes circadian rhythms.
5. Select the correct answer: 'False; circadian rhythms describes the 24-hour sleep-wake cycle.' This option accurately reflects the primary function of circadian rhythms.