Question: A cupful of water and a similar cupful of gasoline were placed on a table near a window on a hot sunny day. A few hours later it was observed that both the cups had less liquid in them but that there was less gasoline left than water. What does this experiment show?

  Options: 
 A. All liquids evaporate.
 B. Gasoline gets hotter than water.
 C. Some liquids evaporate faster than others.
 D. Liquids will only evaporate in sunshine.
Answer: C