The correct answer is: Eastern India, Nepal, Bangladesh.
Bihar is located in the eastern part of India, bordering Nepal and Bangladesh. It is a landlocked state, with no access to the sea. However, it is well-connected to other parts of India by road and rail.
Bihar has a long history of trade with its neighbors. In the past, it was a major center for the export of silk and other textiles. Today, it is a major producer of agricultural products, such as rice, wheat, and sugarcane.
Bihar’s strategic location offers advantages in trade with Eastern India, Nepal, and Bangladesh. These countries are all major markets for Bihar’s products. In addition, Bihar is a major transit point for trade between India and Nepal and Bangladesh.
The other options are incorrect because they do not take into account Bihar’s strategic location. Western India, Pakistan, and Afghanistan are all located far from Bihar. Southern India, Sri Lanka, and the Maldives are all located off the coast of India. These countries are not major markets for Bihar’s products, and they are not major transit points for trade between India and other countries.