A. Diffusion
B. Condensation
C. Sublimation
D. None of these
🧠 Explanation:
Diffusion is the process of molecules moving from a region of higher concentration to lower concentration, driven by random molecular motion. Common in gases and liquids, it’s key in biology, like oxygen entering cells, and in chemistry, like perfume spreading. Understanding diffusion is vital in science, explaining processes like nutrient transport or gas exchange. Its study highlights molecular behavior, impacting fields like medicine, environmental science, and engineering, where controlling diffusion is crucial for system design or biological functions.