The correct option is B more
Density is defined as the mass of a substance per unit volume.
∙ Particles in the solids are closely packed. They have very less or no space between them. So, the amount of substance packed in a unit volume is high. Thus, they have a high density.
∙ Particles in the liquids have more space between them as compared to solids. So, number of particles (or mass) per unit volume is less in liquids. Thus, they are less dense.