Task: Question Answering
Input (English): Herbivores that evolved on grassy plains are likely to naturally select for traits different than herbivores that evolved in rain forests. Which trait is a plains herbivore most likely to develop over thousands of years?  
 (A) long legs for running (B) sharp claws for climbing (C) webbed feet for swimming (D) prehensile tail for hanging from trees
Output (English): A