Task: Question Answering
Input (English): Fish can live in lakes that are frozen because liquid water remains below the ice at the surface. Which of these describes a property of water that allows some liquid water to remain in frozen lakes?  
 (A) Water can dissolve many different substances. (B) Water is less dense as a solid than as a liquid. (C) Water has a Mohs hardness of about 2 when it is frozen. (D) Water holds less air at higher temperatures.
Output (English): B