Which metal is the most inexpensive among the listed options?

• A. Galvanized steel
• B. Copper
• C. Aluminum
• D. Lead

Answer: (A)

Galvanized steel is typically the least expensive option because steel is the most economical basic metal to produce and supply in large quantities. The galvanizing adds a thin zinc coating, which increases durability, but the overall cost remains much lower than the high-value metals in the list. Copper and aluminum are pricier due to their more expensive raw materials and energy-intensive production, while lead, although inexpensive per pound in some markets, is heavier and often not cheaper per usable form than galvanized steel. So, for cost efficiency in common applications, galvanized steel usually comes out cheapest.