Question

when a spoon of sugar is added to a glass of water what will happen.

Answer 1

increases we will we apply the law of mass of conversation

Answer 2

Actually the molecules of H₂O contains molecular spaces between them . when sugar is dissolved in it, the molecules of sugar gets into the spaces between them. Thus the volume of H₂O remains the same and does not undergo any change in its volume.
option B does not change is correct