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What is included in the output from the body?

  1. Chemical element found in the air

  2. Fluid eliminated from the body

  3. Progressive nervous system disorder

  4. Specialized medical care for serious illnesses

The correct answer is: Fluid eliminated from the body

The output from the body primarily refers to the fluids eliminated, which includes urine, sweat, feces, and other excreted substances. This encompasses waste products that the body needs to expel to maintain homeostasis and overall health. Therefore, the correct choice identifies this vital process of waste elimination that is crucial for bodily function. The other options, while related to health, do not pertain to the body's excretory processes.