What process occurs when dry ice changes directly from solid to vapor?
Sublimation is the direct transition from solid to vapor without passing through the liquid state, as seen with dry ice (Section 10.8). As per NCERT, applying relevant law/formula with correct units and sign convention leads to Sublimation. This satisfies dimensional consistency and physical conditions given, so option D is scientifically correct.
Ref: NCERT Class 11 Physics, Thermal Properties and Gravitation.