The correct answer is (d) Maharashtra.
Maharashtra has the largest number of approved as well as operational Special Economic Zones (SEZs) as on June 2012. As of June 2012, Maharashtra had 20 approved SEZs and 16 operational SEZs. The other options are incorrect because they do not have as many approved or operational SEZs as Maharashtra.
Uttar Pradesh has 13 approved SEZs and 10 operational SEZs. Andhra Pradesh has 12 approved SEZs and 8 operational SEZs. Tamil Nadu has 11 approved SEZs and 7 operational SEZs.
SEZs are designated areas with special economic and trade regulations that are designed to attract foreign investment and promote economic development. They are typically located in areas with good infrastructure and access to markets. SEZs offer a number of benefits to investors, including tax breaks, duty exemptions, and simplified customs procedures.
Maharashtra is a leading investment destination in India. It has a strong manufacturing base, a well-developed infrastructure, and a skilled workforce. The state is also home to a number of leading universities and research institutions. These factors have made Maharashtra an attractive destination for SEZs.