Natural cycles of activity that bodies must go through are called

• A. states of consciousness.
• B. hypnotic states.
• C. biological rhythms.
• D. microsleeps.

Answer: (C)

Verified step by step guidance

1. Begin by understanding the concept of 'biological rhythms'. These are natural cycles that regulate various physiological processes in the body, such as the sleep-wake cycle, hormonal release, and body temperature.
2. Consider the term 'states of consciousness', which refers to the different levels of awareness of one's thoughts and environment, such as being awake, asleep, or in a hypnotic state.
3. Examine 'hypnotic states', which are altered states of consciousness characterized by increased suggestibility and focus, often induced by a hypnotist.
4. Understand 'microsleeps', which are brief episodes of sleep that occur when a person is awake, often lasting only a few seconds, and typically happen when someone is sleep-deprived.
5. Identify that 'biological rhythms' are the correct answer because they specifically refer to the natural cycles of activity that bodies must go through, unlike the other options which describe different states or phenomena related to consciousness and sleep.