The correct answer is (b), UAE.
India is the world’s second-largest consumer of gold, after China. In 2020, India imported 750 tonnes of gold, worth $38 billion. The UAE is the largest exporter of gold to India, accounting for over 20% of India’s gold imports. The other options are incorrect. Brazil is a major producer of gold, but it does not export much gold to India. Switzerland is a major gold trading center, but it does not produce much gold itself. South Africa is a major producer of gold, but it does not export much gold to India.
The UAE is a major gold trading center because it is a tax-free country. This makes it an attractive destination for gold traders, who can avoid paying taxes on their profits. The UAE also has a strong infrastructure for gold trading, including a number of banks and financial institutions that specialize in gold trading.
India is a major consumer of gold because it is a traditional symbol of wealth and prosperity in Indian culture. Gold is also used in religious ceremonies and as a form of investment. The Indian government has taken steps to curb gold imports in recent years, but the demand for gold in India remains strong.