Renaissance decorative arts included mirrors made of polished steel until 16th century when Venice produced small silvered ones.

• A. Spoons
• B. Candlesticks
• C. Armor
• D. Mirrors

Answer: (D)

The move from polished metal to silvered glass mirrors is the key idea here. In Renaissance interiors, reflective surfaces began as highly polished metal, such as steel, used for mirrors. But around the 16th century, Venetian artisans on Murano developed the technique of silvering glass, producing small, clearer mirrors that could be used as luxurious decorative objects in interiors. This shift—from metal-polished mirrors to silvered glass mirrors—captures a specific technological and aesthetic advance in Renaissance decorative arts. The other items listed—spoons, candlesticks, armor—are common forms of Renaissance metalwork, but they don’t reflect this particular development in interior decoration, so the description points to mirrors.