The properties of gases, liquids, and solids can be understood by?

Explanation

Option A: Atomic theory explains the behavior and properties of matter in terms of discrete, indivisible units called atoms. It focuses on the composition and interactions of atoms to understand various phenomena in chemistry and physics. Option B: There is no widely recognized theory called "Potential molecular theory" in the context of understanding the properties of gases, liquids, and solids. It may refer to a specific theory or concept used by certain authors or in specific contexts. Option C: Kinetic molecular theory explains the behavior of gases, liquids, and solids based on the motion of their constituent particles. It states that these particles are in constant motion and have kinetic energy. The theory describes how temperature, pressure, and volume are related to the motion and interaction of particles, providing insights into the properties and phenomena of these states of matter.