The human body is an excellent conductor of electricity. It is made up of ____ of water.

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Multiple Choice

The human body is an excellent conductor of electricity. It is made up of ____ of water.

Electric current in the body is carried by ions moving in body fluids, and water is the medium that allows those ions to move freely. Because the human body contains a large amount of water—roughly about seventy percent of body weight in many adults—the fluids are rich in ions, which makes the body a good conductor of electricity. Among the given options, seventy percent best reflects the typical water content of an adult body, making it the most accurate choice. The other values are generally lower or not representative for a healthy adult, which is why they’re not as correct.

Electric current in the body is carried by ions moving in body fluids, and water is the medium that allows those ions to move freely. Because the human body contains a large amount of water—roughly about seventy percent of body weight in many adults—the fluids are rich in ions, which makes the body a good conductor of electricity. Among the given options, seventy percent best reflects the typical water content of an adult body, making it the most accurate choice. The other values are generally lower or not representative for a healthy adult, which is why they’re not as correct.

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