Task: Question Answering
Input (English): A group of students tested the effects of different amounts of water on ivy plant growth. Afterwards, they could not remember how much each plant grew per day. What should they have done to practice good science?  
 (A) Discuss their observations with other groups in their class. (B) Conduct the experiment with more than one type of plant. (C) Record daily information in a data table. (D) Make up explanations for the results.
Output (English): C