Task: Question Answering
Input (English): A plant grows in a damp, marshy area filled with nonvascular plants and seedless vascular plants. Which characteristic indicates the plant is classified as a seedless vascular plant?  
 (A) It is 18 cm tall. (B) It produces spores. (C) It grows in poor soil. (D) It has a flat gametophyte.
Output (English): A