Jet lag causes problems with our ________ clock.    biological    botanical    natural    rhythmical

The correct answer is biological.

Jet lag is a temporary sleep disorder that occurs when a person's internal body clock, which regulates sleep and wake cycles, is disrupted due to rapid travel across time zones. This internal body clock is also known as the circadian rhythm, which is approximately a 24-hour cycle that influences various physiological processes, including hormone release, eating habits, and sleep patterns.

When we travel, especially across multiple time zones, our biological clock can fall out of sync with the local time at our destination, leading to various symptoms of jet lag such as sleep disturbances, fatigue, irritability, and difficulty concentrating. The body takes time to readjust to the new time zone, which is why understanding the biological aspects of our internal clock is crucial for managing the effects of jet lag effectively.