Task: Question Answering
Input (English): In eukaryotic organisms, microtubules give cells structure, and microfilaments help the cell contract and move. Together, they combine to perform functions similar to what two human body systems?  
 (A) the endocrine and skeletal systems (B) the circulatory and respiratory systems (C) the skeletal and muscular systems (D) the integumentary and excretory system
Output (English): C