Task: Question Answering
Input (English): Which best describes two organ systems working together to help maintain homeostasis?  
 (A) The reproductive organs produce sex cells. (B) The nerves carry signals from the eye to the brain. (C) The bones and muscles of the hand work together to grip a pencil. (D) The muscles of the chest tighten to push carbon dioxide out of the lungs.
Output (English): D