After dinner, hector demonstrated to his parents a process that he learned in science class that day. He poured a small amount of sugar into a cup of water and then stirred it until the sugar dissolved. Which process did hector demonstrate? A. How to separate components of a solution

B. How substances dissolve in water to produce pure substance

C. How two pure substances can be combined to form a solution

D. How dissolving a substance in water is an example of chemical reaction