Task: Question Answering
Input (English): This in turn causes the average temperature on Earth to rise. Which of the following observations supports that theory?  
 (A) The summer of 1998 was one of the hottest summer seasons on record. (B) Carbon dioxide gas from cars and industry is a product of burning that produces heat. (C) Carbon dioxide in the upper atmosphere absorbs and re-emits heat radiated from Earth's surface. (D) Radiation on Earth's surface is increasing because of a hole in the ozone layers.
Output (English): C