Which of the following is a major producer of copper?

Zambia is a major producer of copper. Copper is a valuable metal used in many industries, including construction, electronics, and transportation. Zambia is one of the largest producers of copper in the world, accounting for a significant portion of global production. The country's copper production is primarily located in the Copperbelt region, which is home to some of the world's largest copper mines. The mining industry is a key contributor to Zambia's economy, with copper exports being a significant source of foreign exchange earnings. In contrast, Chad, Burundi, and Morocco are not major producers of copper. While these countries may have some copper deposits, their production levels are relatively small compared to that of Zambia. Therefore, the correct option is "Zambia."