Question: Water used in a factory is heated to 75 degrees Celsius. It is discharged into a nearby river that has a normal temperature of 20 degrees Celsius. Which should most likely be done to minimize damage to the river?

  Options: 
 A. decrease the temperature of the factory water
 B. increase the temperature of the river water
 C. remove the vegetation from the river
 D. add more fish to the river 
Answer: A