Which metal is known for its reddish-brown color and is not corrosive?

Copper is well-known for its distinctive reddish-brown color, which is one of its most recognizable features. This metal stands out in various applications due to its appealing aesthetic and excellent electrical conductivity. One of the key properties of copper is its resistance to corrosion, particularly in environments that would typically degrade other metals. While it can develop a patina over time, this natural oxidation layer actually serves to protect the underlying metal from further corrosion, thus making copper suitable for a wide range of uses, from plumbing to electrical wiring and decorative arts.

In contrast, other metals such as iron are prone to rust when exposed to moisture, while metals like zinc can corrode under certain conditions despite being used as a protective coating for iron. Therefore, copper's unique characteristics of color and resistance to corrosion clearly identify it as the correct answer.