Identify from following physical transformations that exhibits decrease in entropy.

Step-by-step solution

Entropy change depends on the transition between physical states. Gases have the highest entropy, followed by liquids, then solids with the lowest entropy due to increasing disorder. Option A shows melting: H ₂ O _ ( s ) H ₂ O _ ( ) , where entropy increases ( S > 0 ). Option B shows vaporization: H ₂ O _ ( ) H ₂ O _ ( g ) , where entropy increases significantly ( S > 0 ). Option C shows sublimation: H ₂ O _ ( s ) H ₂ O _ ( g ) , where entropy increases ( S > 0 ). Option D shows condensation: H ₂ O _ ( g ) H ₂ O _