Surfaces treated with anti-icing fluids appear _______________.

• A. Glassy, smooth, and wet
• B. Rough, dry, and icy
• C. Opaque and glossy
• D. Wet but sticky

Answer: (A)

Anti-icing fluids leave a thin, uniform film on the surface that looks glassy, smooth, and wet. This film fills micro-roughness and creates a slick, transparent layer, so the surface appears glossy and wet to the touch and visually. The description in the correct choice captures that slick, glassy, wet impression. The other options don’t fit: a rough, dry, icy surface contradicts the smooth liquid film; an opaque surface conflicts with the transparent film; a wet but sticky texture isn’t characteristic of the anti-icing film, which is designed to be slick and minimize ice adhesion.