Task: Question Answering
Input (English): Students kept some crickets in a classroom tank. The tank was kept in an area where it would get several hours of sunlight a day. The tank contained one area with water, and another area with soil where plants were growing. From which source did the crickets gain all of their energy?  
 (A) the soil (B) the water (C) the plants (D) the sunlight
Output (English): C