Task: Question Answering
Input (English): Coral reefs are found in shallow tropical ocean waters. A coral reef is a diverse ecosystem that is supported by the photosynthesis of marine plants and the algae that live within the tissues of the coral. Given this information, when would the waters in a coral reef likely have the highest dissolved oxygen concentration?  
 (A) 7 a.m. (B) 2 p.m. (C) 9 p.m. (D) midnight
Output (English): B